Bridgeport Torq-Cut 22 with Centroid M400 Control

Startup

  1. Switch on the main switch, on the door of the control cabinet
  2. Verify that air is connected and the air shutoff is open
  3. Wait for console to boot and display "Home not set"
  4. Release Emergency Stop
  5. Press CYCLE START to find and set machine home

The Machine Home position is fully X+ (table left), Y+ (saddle forward), and Z+ (head up).

Idle Periods

  1. Press Emergency Stop to remove power from the spindle and servo drives.
  2. To resume normal operation, release Emergency Stop.

Shut Down

  1. Press F10/Shutdown
  2. Optionally, press F1/Park to move the axes back near the machine home position. This will save time on the next startup and homing sequence.
  3. Press Emergency Stop
  4. Press F2/PowerOff
  5. Wait for CNC console display to go fully blank (about 15 seconds).
  6. Switch off the main switch, on the door of the control cabinet

The control starts up in Incremental jog mode. In order to jog the axes in continuous movement, you need to press the INCR/CONT key to switch from incremental to continuous jog mode.

Spindle Rotation Controls

You can control spindle rotation speed and direction manually with jog panel keys, or automatically with program codes.

The spindle must be in Auto mode in order to use programmed M and S codes. The spindle must be in Manual mode in order to use the jog panel keys.

Switch between Auto and Manual control modes.

In manual mode, you can control operation and direction with these keys:

Select spindle forward (CW)
Select spindle reverse (CCW)
Start spindle
Stop spindle

In Auto mode, you can control operation and direction with these codes:

M3 Start spindle forward (CW tool)
M4 Start spindle reverse (CCW tool)
M5 Stop spindle
Snnn Set speed to nnn RPM

In either mode, you can further control speed with these keys:

Increase speed
Set speed to 100% of programmed speed (Auto mode) or to half of maximum speed (Manual mode)
Decrease speed

Gear Shifters

The machine has a pneumatically shifted 2-speed transmission in the head.

Gear shifting may be done with Jog Panel keys or with M functions, either in a CNC program or at the MDI prompt:

M42

High range (1500 - 6700 RPM)
M41 Low range (30 - 1500 RPM)
M49 Shift to best range for programmed RPM

In automatic operation, the M3 and M4 codes call M49 at every spindle start, automatically shifting ranges as needed.

You only need to enter M41 or M42 for manual operations.

M41 and M42 require that spindle control be in Auto mode. In Manual mode use the Aux1 and Aux4 keys instead.

Tool Setup

Tool descriptions and locations are stored in the Tool Library.

To get to the Tool Library, press F1/Setup → F2/Tool → F2/Tool Lib.

The Centroid tool library has space in its list for up to 200 tools. The TC22 has 22 positions, or "bins", in the tool carousel.

You can use the Bin column in the Tool Library to specify which carousel bin a given tool is stored in.

If you are just starting out, you will find it easiest to use only the first 22 tool numbers, so that your bin positions can match your tool numbers. When you become more comfortable with the Tool Library and the ATC, then you can expand your tool list and use all 200 tool numbers if you wish.

Use the F1/Clear Bin key on the Tool Library screen to clear the bin number for the selected tool, indicating that that tool is not in the carousel. If a tool is not in the machine, its Bin number will be shown as "-1". If a tool is currently in the spindle, its Bin number will be shown as "000".

Use the F2/ATC Reset key to verify or correct the state of the tool changer, usually after an error or fault during a tool change. See Recovering from Errors below for details.

You cannot change or clear the bin of the tool currently in the spindle, except through the F2/ATC Reset key.

Changing Tools

From the Carousel

When you run a CNC program cycle, the program will generally call out the tools it needs, when it needs them, and the control system will change tools automatically.

During setup and manual operations, you may need to have the machine change tools (put the current tool away in the carousel, and get out a different one) outside of any CNC program.

You can do that in one of two ways:

From outside the Machine

At any time when no program cycle is running, you can remove or install a tool in the spindle by hand, using the tool-release button on the machine head.

To remove a tool:

  1. Verify that the spindle is off, and fully stopped
  2. Grasp the tool holder in the spindle
  3. Press and hold the tool-release button
  4. Remove the tool from the spindle
  5. Release the tool-release button

To load a tool:

  1. Verify that the spindle is off, and fully stopped
  2. Grasp the tool holder, taking care to keep your hand clear of the top of the flange (a pinch point!)
  3. Press and hold the tool-release button
  4. Insert the tool into the spindle*
  5. Release the tool-release button
  6. Verify that the tool is fully seated

* This TC22 uses CAT-standard tooling. It is important to orient the tool holder with the shallow dimpled notch towards the carousel when the spindle is oriented. The drive key on the spindle is away from the carousel when the spindle is oriented, and thus should engage the deeper notch in the tool holder.

When you load and unload tools by hand as described above, the control system and PLC do not register any change. If the control previously expected that Tool 7 was in the spindle, and planned to put it away in carousel bin 7 upon the next tool change, then that is still what it will expect, and what it will do.

Loading the Carousel

The simplest way to load the desired tools into the carousel is through the spindle, using the F7/ATC key on the Setup menu, and the tool-release button on the machine head.

For example, suppose your next job requires tools #2, #5 and #7, and you have those tools on the tool cart in front of the machine.

  1. Press F1/Setup to display the Setup screen.
  2. Press F7/ATC.
  3. Enter the first tool number you wish to load (e.g. 2) in the entry box.
  4. Press Cycle Start. The control will go through the motions of loading tool #2 from the carousel, and will show "Tool: T2" in the status window.
  5. If a previous tool #2 is now in the spindle, remove it and set it aside.
  6. Insert the new tool #2 into the spindle.
  7. Press F7/ATC again.
  8. Enter the number of the next tool you wish to load (e.g. 5)
  9. Press Cycle Start. The control will put the previous tool (tool #2) away in the carousel, and will go through the motions of loading tool #5.
  10. If a previous tool #5 is now in the spindle, remove it and set it aside.
  11. Insert the new tool #5 into the spindle.
  12. Press F7/ATC again.
  13. Enter the number of the third tool (e.g. 7)
  14. Press Cycle Start. The control will put the previous tool (tool #5) away in the carousel, and will go through the motions of loading tool #7.
  15. If a previous tool #7 is now in the spindle, remove it and set it aside.
  16. Insert the new tool #7 into the spindle.
  17. Press ESC to return to the Main Screen.
There is no need to do a further tool change to put away the last tool (#7 in the example above). The control will put it away whenever a different tool is called for.

CNC Programming

Generally, no special codes are required in your CNC programs in order to use the automatic tool changer. The same M6 code works for both manual and automatic tool changing.

To change to a new tool, program T__ M6. The control will look up the location (bin number) for the requested tool, and the PLC system will put away the previous tool and pick up the new tool from its assigned bin.

Optionally, you can program M17 at the end of the last cut with each tool, as soon as the cutter is clear of the material, prior to moving Z to home and changing tools. M17 will turn off the spindle and coolant, and begin the spindle orientation sequence. This allows the spindle to orient while Z is moving to home, saving a few seconds in the tool change.

If you have some particularly long tools in the carousel, you can use the M50 and/or M51 codes to rotate the carousel after an M6 tool change is complete, in order to keep the longer tools away from a tall workpiece or fixture. M50 rotates the carousel forward one tool position. M51 rotates the carousel reverse one position. Repeat the codes as many times as needed to rotate multiple positions.

M50 and M51 do not change the put-away location for the tool in the spindle. When the next M6 tool change comes up, the PLC will rotate the carousel back around to the correct empty pocket before putting away the active tool.

Recovering from Errors

If an error occurs which causes the automatic tool change sequence to be interrupted, you will need to take a few steps to ensure that the control is ready to run again, before you can restart the job.

First, you will need to return the tool changer components to their idle, "ready" positions:

If the carousel is not retracted out of the way, use the Aux5 key in Maintenance Mode (see below) to retract it.

If the carousel is not centered on a tool position, then use the Aux8 (Tool Index -) or Aux9 (Tool Index +) keys to move it into an aligned position. In this case, take particular care to verify that the carousel position reported by the control (e.g. in the "Possible ATC Fault" prompt below) is correct.

The next time you begin an automatic program cycle after a tool-change failure — running a program, homing after powerup, or using the F3/MDI prompt — the control will display a message noting that the last tool change failed, and prompting you to confirm the state of the tool changer.

The control will assume that no tool exchange has happened. Therefore, if the error which interrupted the tool change happened before the preceding tool was put away, you can generally just acknowledge the prompt by pressing the 'Y' key.

If the preceding tool did get put away, then you will need to use the F2/ATC Reset option in the Tool Library to tell the control which tool is now in the spindle; which carousel bin that tool should be put away in; and to what bin the carousel is currently rotated.

ATC Reset

If the tool number or carousel position reported in the "Possible ATC Fault" message box is not correct, then you should press ESC or Cycle Cancel; go to the Tool Library screen (F1/Setup → F2/Tool → F2/Tool Library); and press F2/ATC Reset.


The control will first prompt you to verify the position of the tool carousel. Enter the actual carousel position (bin number) that is aligned with the spindle.


The control will then prompt you to verify which tool is in the spindle. Enter the tool number which is in the spindle.


Third, the control will prompt you for the carousel location in which to put away the tool that is in the spindle. Enter the desired putback location. This is usually the same as the tool number, but it can be any empty carousel location.


Finally, the control will ask you to confirm that you want to reset the tool changer, reminding you again that the chosen putback location must be empty. To proceed, press 'Y'.

The control will update itself with the information you have entered. You should then be able to start and run the next program cycle without any complications.

Troubleshooting Failures

If a tool change fails for any reason, the PLC will store the state of numerous inputs and flags in word variable W8. Use the Alt-I PLC Diagnostic display to view the value in W8.

A separate program, named AWDecode.exe, is available to interpret and display the content of W8. You can launch AWDecode.exe from the Windows start menu. Enter the value from variable W8 in the box at the top of the AWDecode window. AWDecode will then show the state of the various input and flag bits which the PLC program has stored.

This information, combined with the actual error message which was displayed in the control's status window when the failure occurred, will often show exactly what went wrong.

Jog Panel Summary

In normal operation, the Auxiliary keys on the jog panel have the following functions:

Shift to high spindle range (1500 - 6700 RPM) No function No function
Shift to low spindle range (30 - 1500 RPM) No function No function
Work Light On/Off
(optional)
Index Carousel Minus Index Carousel Plus
(Aux10) No function (Aux11) No function (Aux12) Maintenance Mode On/Off
(Aux13) No function (Aux14) No Function

Aux keys with no default function shown above are available for custom PLC-controlled features, or for features assigned through Machine Parameters 188-199. See Chapter 14 of the M-Series Operator's Manual.

M Function Summary

M0Stop (wait for Cycle Start)
M1Optional Stop (wait for Cycle Start)
M2Program Restart (with wait for Cycle Start)
M3Spindle CW / Forward
M4Spindle CCW / Reverse
M5Spindle Stop
M6Change Tools
M8Flood Coolant
M9Coolant Off
M15*Unclamp Tool
M16*Clamp Tool
M17Prepare for Tool Change
M18Send ATC-Reset Request to PLC
M19Orient Spindle
M41Shift to Low Gear
M42Shift to High Gear
M49Shift Spindle to Best Range for Programmed RPM
M50Index Carousel Forward One Position
M51Index Carousel Reverse One Position
M80*Advance the Carousel to the Spindle
M81*Retract the Carousel from the Spindle

* These functions are used in error recovery and maintenance, and are only available when Maintenance Mode is on.

See Chapter 13 of the Centroid M-Series Operator's Manual for descriptions of standard M functions.

M functions M91 and above are used internally in custom macro programs, but are generally not used directly in user machining programs.

Machine Parameters Summary

The following parameters on the Centroid Machine Parameters table are used for features specific to this machine, or have settings specific to this machine.

ParameterMeaningValueNotes
P6ATC installed1Enable automatic tool changing
P34Spindle encoder counts-2000Encoder counts per revolution, in forward run
P35Spindle axis6Use axis #6 for spindle settings
P36Rigid tapping1Enable rigid tapping
P57Load meters39Show PLC-controlled load meters for X, Y, Z and Spindle
P78Spindle speed1Show actual spindle speed from encoder (required for orient logic)
P143DRO display11Show load meters on DRO, plus distance-to-go display
P146Feedrate threshold3Activate Feed Hold if Feedrate Override is turned down below 3%
P160ATC type1Enhanced ATC, non-random (umbrella type)
P161ATC tools22Number of carousel positions
P164ATC features1Enable F2/ATC Reset key in tool library
P178Output options4Use bipolar analog spindle speed/direction signal
P758VFD discharge time 15000Time (ms) from line power off to undervoltage fault
P759VFD discharge time 211000Time (ms) from line power off to full shutdown (clearing the fault)
P761Spindle motor RPM for gear-shift assist30Speed of spindle motor movement to help gears mesh during shift
P762Shift retry limit3Number of times to attempt gear shift before giving up
P773Analog zero32625Analog output value for zero RPM (midpoint of range)
P774Orient position-879Spindle orient position for tool changes (from 0 to -2000 counts)
P775Orient window40Tolerance window, in encoder counts, for spindle to be considered in orient
P776Orient Kp20Proportional gain for spindle orient PID loop
P777Orient Ki0.002Integral gain for spindle orient PID loop
P778Orient Kd1600Derivative gain for spindle orient PID loop
P779Orient approach speed0.25Speed during initial approach to orient position
P990Spindle load meter scale (Volts)10.0Analog volts from spindle drive, for full-scale motor load
P991 - P993Servo load meters scale (Volts)-2.5Analog volts from Yaskawa servo drives, for full-scale motor load

For all other Machine Parameter functions, see the Configuration chapter of the Centroid M-Series Operator's Manual.

Z Axis Position for Tool Changing

During automatic tool changes, the Z axis moves to Return Point #2, the G30 position, to line up the spindle with the tool carousel.

The G30 position is measured from Machine Home. If anything causes the homed position of the Z axis to change -- for example, removing and reinstalling the Z axis servo motor or its drive belt -- then the G30 Z position will need to be adjusted.

The G30 position is on the "Return" table under Work Coordinate System Configuration: F1/Setup → F1/Part → F9/WCS → F1/Return.

  1. Move Z all the way up to home
  2. Use Maintenance Mode to advance the carousel
  3. Place a tool holder with no pull stud in the carousel
  4. Carefully jog Z down until the spindle taper just touches the tool holder; then back up about 0.010"
  5. Go to the Return points table. Note that the DRO display automatically switches to Machine Coordinates (distance from machine home) when on this screen.
  6. Enter the Z coordinate from the DRO in the G30 column.
  7. Optionally, enter the same Z value in the G28 column. This will minimize head movement before tool changes and at the end of a CNC job.
  8. Press F10/Save
  9. Jog Z back up to home
  10. Remove the dummy tool holder from the carousel.
  11. Retract the carousel and cancel Maintenance Mode.
  12. Run a few tool changes, watching to verify that tools are fully seated as they are loaded, and there is no excessive deflection of the carousel fingers.

Maintenance Mode

The PLC program includes a "Maintenance Mode", which allows you to manipulate the tool changer components directly. This is primarily used in error recovery, but it can also be used to test or troubleshoot ATC components in isolation.

To switch Maintenance Mode on or off, press and hold the Aux12 key for one second. Aux12 is the blank gray key in the right-most column, immediately below the Aux9 or "Tool Index +" key. The LED in the Aux12 key will light up to indicate that Maintenance Mode is active.

You must cancel Maintenance Mode before you can again run normal program cycles.

In Maintenance Mode, the jog panel Aux keys have the following special functions:

High gear shift solenoid on/off Orient spindle / cancel orient Unclamp/clamp tool (maintained)
Low gear shift solenoid on/off Retract Carousel Advance Carousel
Shifter stop pin solenoid on/off Index Carousel Minus Index Carousel Plus
(Aux10) No function (Aux11) No function (Aux12) Maintenance Mode On/Off
(Aux13) No function (Aux14) No Function

Also in Maintenance Mode, the following special M functions are available at the F3/MDI prompt:

M15 Unclamp tool
M16 Clamp tool
M80 Advance carousel to spindle
M81 Retract carousel from spindle

Yaskawa Spindle Drive Parameter Settings

Most spindle drive parameters are set to factory defaults. The following parameters are set to values different from factory defaults, or different from original Bridgeport settings:

Parameter Value Meaning
C1-10 2.0 Accel/Decel time (s)
C1-12 1.00 Motor speed adjustment value (reference gain tuning)
C1-26 5720 Motor speed at 100% reference
C1-36 00001000 Bit 3 set:
1CN-40 selects servo mode (SV) instead of SSC
C1-37 00001000 Bit 3 set:
Keep MC on after deceleration to stop

See the Yaskawa Varispeed 626-VM3C Instruction Manual for detailed information on these and other spindle drive parameters.

Troubleshooting

Faults, Errors and Warnings

The PLC program can generate numerous system-specific fault, error and warning messages, in addition to the general control messages listed in the Centroid operator's manual.

PLC Diagnostic Display

You can use the PLC Diagnostic display on the console to view Centroid PLC input, output and memory locations.

At the control's main screen, press Alt-I to activate the PLC Diagnostic display. Press Alt-I again to dismiss it.

Each page of the Diagnostic display shows four rows of red and green dots: the first row shows PLC inputs 1 through 80; the second row PLC outputs 1 through 80; the third row PLC memory bits 1 through 80; and the fourth row PLC program stages 1 through 80.

You can use the arrow keys to move a highlight box over any of these locations. The name of the highlighted location will be displayed in the center of the screen below the red and green dots.

For example, in the illustration above the highlight box is on Output #42: The dot below the 2, to the right of the superscript 4, on the second line.

Below the four rows of bit status information are ten numeric ("word") variable values, labeled W1 through W10. Some of these variables also hold useful status information, described with the error and fault conditions to follow.

There are multiple pages of Diagnostic data. With the Alt-I diagnostic display showing, you can use the F12 and F11 keys to scroll right and left. For example, pressing F12 once will shift to the page showing inputs and outputs 81 through 160, and word variables W11 through W20.

The PLC system can "invert" inputs in its software, making a closed input appear open and an open input appear closed. This is useful when the PLC logic assumes one type of sensor (e.g. normally-closed) and the machine is built with another type (e.g. normally-open). If the PLC system is inverting an input, then that input will be shown on the PLC Diagnostic display with an overscore above it. The color of the dot will represent the inverted state, not the actual electrical state. In other words, a green dot with an overscore represents an electrically open input, which appears in the PLC logic to be a closed input.

The PLC system can also "force" inputs, outputs, and memory bits to appear on or off, regardless of the actual hardware state or controlling PLC logic. An input, output, or memory bit that is being forced is displayed with a underscore below it.

Clearing Fault and Error Conditions

Messages with 9000-series message numbers are Faults. After resolving the problem, you must press and release the Emergency Stop button to clear a Fault.

Messages with 8000-series message numbers are Errors. Errors will cancel the program cycle and stop the spindle and coolant, but they do not then need to be explicitly reset.

Messages with 5000-series and 2000-series message numbers are Warnings and Informational Messages. They do not cancel the cycle or require any action to reset.

Message Descriptions

"9001 !!! PLC EXECUTION FAULT !!!"

The control detected an internal error in processing the PLC logic program.

Report this error to your dealer, along with the values from W14 and W15. Also report what function the machine was performing when the fault occurred.

You must shut down and cycle the power to clear this fault.

References:

PLC W14: Copy of internal SV_PLC_FAULT_STATUS, indicating the type of problem
PLC W15: Copy of internal SV_PLC_FAULT_ADDRESS, indicating the location of the problem

"9025 Axis1 Drive Fault Detected"
"9026 Axis2 Drive Fault Detected"
"9027 Axis3 Drive Fault Detected"
"9028 Axis4 Drive Fault Detected"

One of the servo amplifiers is reporting a fault condition.

If possible, check the LED display on the amplifier itself to see the specific fault code.

Press and release Emergency Stop to clear the fault.

References:

PLC MEM16: Axis #1 drive status.  Green = okay, Red = fault
PLC MEM17: Axis #2 drive status.  Green = okay, Red = fault
PLC MEM18: Axis #3 drive status.  Green = okay, Red = fault
PLC MEM19: Axis #4 drive status.  Green = okay, Red = fault
Schematic: Lines 36, 41, 46

"9031 Jog Panel Communication In Fault"

The control unit detected loss of communication from the operator panel in the Console.

Check for damage or disturbance to the cable between the console and the Oak control unit in the control cabinet.

Press and release Emergency Stop to clear the fault.

References:

Schematic: Lines 57, 62

"9032 Jog Panel Communication Out Fault"

The operator panel reported back to the control unit a loss of communication from the control unit. This indicates the return signal from the pendant is functioning normally, but the outgoing signal may have problems.

Check for damage or disturbance to the cable between the console and the Oak control unit in the control cabinet.

Press and release Emergency Stop to clear the fault.

References:

Schematic: Lines 57, 62

"9039 Software Ready Fault"

You exited the CNCM control software without first pressing Emergency Stop.

Always press Emergency Stop prior to exiting the control software.

Press and release Emergency Stop to clear the fault.

"9061 Mini PLC 1 Communication Fault"

The control lost communication with the PLC I/O expansion board.

Power down, open the cabinet, and check the connections at both ends of the gray cable which connects H8 on the Oak unit to H3 on the PLCADD1616 board.

Power up and check for a green "PLC OK" LED indication on the expansion board.

References:

PLC W36: bitmap of detected PLC expansion boards.  1 = one board detected
Machine Parameter 900: bitmap of expected PLC expansion boards.  1 = one board expected
Schematic: Lines 59, 84

"8098 Error: Maintenance Mode Active"

You attempted to start an automatic program cycle, but Maintenance Mode (Aux12) is still active.

Press and hold the Aux12 key for one second to cancel Maintenance Mode.

"8181 ATC TOOL COUNTER NOISE (1)"

During ATC carousel rotation, the tool counter sensor opened sooner than expected when moving out of one tool position and into the in-transit state. This may indicate that the tool-counter input is affected by electrical noise, leading to false position counting.

This may also indicate that the rest position at the end of a previous carousel rotation was too close to the edge of the Geneva cam, perhaps due to a failing brake in the carousel rotation motor.

Use the Aux8 and/or Aux9 carousel index keys to rotate the carousel another position or two, so that it is again centered on one of the tool bins. Then press Alt-K to view the current carousel bin recorded in the software. If the recorded position does not match the actual position, perform an ATC Reset in the Tool Library.

References:

PLC INP19: Tool counter sensor.  Green = closed = in position.  Red = open = between positions
PLC W17: Current carousel position, as recorded by the PLC program
Schematic: Line 86

"8182 ATC TOOL COUNTER TIMEOUT (1)"

During ATC carousel rotation, the tool counter sensor did not open, to indicate rotation from one tool position into the in-transit state, within the expected time. This may be because the sensor is faulty or out of position, so that it did not detect the movement. This may also be because the carousel failed to move, perhaps due to a failure to get power to the motor.

References:

PLC INP19: Tool counter sensor.  Green = closed = in position.  Red = open = between positions
PLC OUT18: Carousel motor reverse relay.  Green = rotate reverse.  Red = off
PLC OUT19: Carousel motor forward relay.  Green = rotate forward.  Red = off
PLC W17: Current carousel position, as recorded by the PLC program
Schematic: Lines 86, 103, 104, 122, 123

"8183 ATC TOOL COUNTER NOISE (2)"

During ATC carousel rotation, the tool counter sensor closed sooner than expected when moving from the in-transit state into the next tool position. This may indicate that the tool-counter input is affected by electrical noise, leading to false position counting.

Use the Aux8 and/or Aux9 carousel index keys to rotate the carousel another position or two, so that it is again centered on one of the tool bins. Then press Alt-K to view the current carousel bin recorded in the software. If the recorded position does not match the actual position, perform an ATC Reset in the Tool Library.

References:

PLC INP19: Tool counter sensor.  Green = closed = in position.  Red = open = between positions
PLC W17: Current carousel position, as recorded by the PLC program
Schematic: Lines 86

"8184 ATC TOOL COUNTER TIMEOUT (2)"

During ATC carousel rotation, the tool counter sensor did not close, to indicate rotation from the in-transit state to the next tool position, within the expected time. This may be because the sensor is faulty or out of position, so that it did not detect the movement. This may also be because the carousel stopped moving, perhaps due to a mechanical jam or to a failure to get power to the motor.

References:

PLC INP19: Tool counter sensor.  Green = closed = in position.  Red = open = between positions
PLC OUT18: Carousel motor reverse relay.  Green = rotate reverse.  Red = off
PLC OUT19: Carousel motor forward relay.  Green = rotate forward.  Red = off
PLC W17: Current carousel position, as recorded by the PLC program
Schematic: Lines 86, 103, 104, 122, 123

"8202 ATC BIN OUT OF RANGE"

The PLC received a tool-change or tool prestage request for an invalid carousel position: a position that is not between 1 and the number of positions specified in Machine Parameter 161.

References:

Machine Parameter 161: number of positions in the tool carousel
PLC W10: Carousel position that was requested by the CNC
PLC W19: PLC copy of Parameter 161, number of positions in the tool carousel

"8203 LOW AIR PRESSURE"

An automatic tool change was requested, but there is not sufficient air pressure to operate the pneumatic ATC components.

Verify that air is connected and turned on, and that pressure is within the range specified by the machine builder.

If this error occurs in the middle of a tool change, you may need to increase the size of the supply line, or install an accumulator tank, in order to maintain pressure at the machine during tool changes.

References:

PLC INP24: Air pressure switch.  Green = closed = good pressure.  Red = open = low or no pressure
Schematic: Line 88

"8204 M19 ORIENT LOST"

During an automatic tool change, or after an M19 spindle orientation for any other purpose, the spindle failed to maintain its orient position.

This is usually due to some sort of external disturbance, such as excessive force on the tool or tool holder.

Orientation is considered lost if the spindle position is outside the window set in Machine Parameter 775 for more than one half second.

References:

Machine Parameter 775: Orientation window half-width, in counts of the spindle encoder
PLC MEM34: Orient complete flag.  Green = 1 = in orient.  Red = 0 = out of orient

"8205 CANNOT TURN SPINDLE WITH TOOL UNCLAMPED"

The control received, or thought it received, a command to rotate the spindle (either to run, to orient, or to shift gears if applicable) while the tool drawbar was in the unclamped position.

References:

PLC MEM21: Spindle-run flag.  Green = 1 = spindle should be running in normal operation
PLC MEM24: Run-for-orient flag.  Green = 1 = spindle should be running in order to orient
PLC MEM28: Run-for-shift flag.  Green = 1 = spindle should be running in order to shift gears
PLC INP30: Tool-clamped switch.  Green = closed = fully clamped.  Red = open = not fully clamped
PLC INP31: Tool-unclamped switch.  Green = closed = fully unclamped.  Red = open = not fully unclamped
Schematic: Lines 91, 92

"8206 SPINDLE OUT OF GEAR"

The control received a command to rotate the spindle (either to run, or to orient) but the transmission is not in either gear.

References:

PLC MEM21: Spindle-run flag.  Green = 1 = spindle should be running in normal operation
PLC MEM24: Run-for-orient flag.  Green = 1 = spindle should be running in order to orient
PLC INP25: High gear switch.  Green = closed = in high gear.  Red = open = not in high gear
PLC INP26: Low gear switch.  Green = closed = in low gear.  Red = open = not in low gear
Schematic: Line 89

"8207 ORIENT TIMEOUT WAITING FOR SPINDLE TO STOP"

During an automatic tool change, or after an M19 orientation request for any other purpose, the spindle failed to come to a stop so that orientation could proceed.

This is probably a result of programming "M94/19" directly in your CNC code, instead of calling the provided M19, M20, or M6 macro.

This can also happen in Maintenance Mode, if you press Aux2 to orient while the spindle is running. Stop the spindle before using Aux2.

"8208 ORIENT ERROR: FAILED TO CAPTURE INDEX PULSE"

Spindle orientation was requested during an automatic tool change, or by an M19 orientation request, but the control has not yet located the spindle encoder index pulse since the last startup or emergency stop reset.

The M5 spindle-stop macro and the PLC program work together to locate the spindle encoder index pulse when needed. Generally, if the spindle has been started with M3 or M4, then stopped with M5, at least once since the control was started up or emergency stop was reset, then the index pulse location will have been captured.

If orientation is requested during an M6 tool change or directly with M19, and the index pulse has not yet been captured, then the control will start up the spindle at low RPM for a moment, then stop it again.

Only if that process has failed for some reason, or if you are using Aux2 in Maintenance Mode without first having started and stopped the spindle with M3/M4 and M5, will you get the "FAILED TO CAPTURE INDEX PULSE" error message.

"8211 ATC NOT READY: MZ_ACK"

During an automatic program cycle, with no tool change in progress, the signal from the CNC to the PLC which reports that initial head positioning for a tool change is complete was set (1). This flag should only be set for short intervals during a tool change.

Report this condition to your dealer.

"8212 ATC NOT READY: TOOL CLAMP INP"

During an automatic program cycle, with no tool change in progress, the tool-clamped switch was open.

This indicates either a malfunctioning or out-of-position switch, or an uncommanded tool release.

References:

PLC INP30: Tool-clamped switch.  Green = closed = fully clamped.  Red = open = not fully clamped
Schematic: Line 91

"8213 ATC NOT READY: TOOL UNCLAMP INP"

During an automatic program cycle, with no tool change in progress, the tool-unclamped switch was closed.

This indicates either a malfunctioning or out-of-position switch, or an uncommanded tool release.

References:

PLC INP31: Tool-unclamped switch.  Green = closed = fully unclamped.  Red = open = not fully unclamped
Schematic: Line 92

"8214 ATC NOT READY: TOOL COUNTER INP"

During an automatic program cycle, with no tool change in progress, the tool-counter input was open.

This usually indicates that the tool carousel is out of position, perhaps due to an error or interruption in a preceding tool change.

It could also indicates a malfunctioning or out-of-position sensor, or uncommanded carousel movement.

References:

PLC INP19: Tool counter sensor.  Green = closed = in position.  Red = open = between positions
Schematic: Line 86

"9215 TOOL CLAMP/UNCLAMP BOTH ON"

The tool-clamped and the tool-unclamped switches were both closed at the same time.

This indicates faulty switches or damaged wiring.

References:

PLC INP30: Tool-clamped switch.  Green = closed = fully clamped.  Red = open = not fully clamped
PLC INP31: Tool-unclamped switch.  Green = closed = fully unclamped.  Red = open = not fully unclamped
Schematic: Lines 91, 92

"8221 ATC NOT READY: HU_ACK"

During an automatic program cycle, with no tool change in progress, the signal from the CNC to the PLC which reports head-up movement complete after unloading a tool was set (1). This flag should only be set for short intervals during a tool change.

Report this condition to your dealer.

"8222 ATC NOT READY: HD_ACK"

During an automatic program cycle, with no tool change in progress, the signal from the CNC to the PLC which reports head-down movement complete over a new tool was set (1). This flag should only be set for short intervals during a tool change.

Report this condition to your dealer.

"8223 ATC NOT READY: CAROUSEL_OUT INP"

During an automatic program cycle, with no tool change in progress, the carousel-retracted switch was open, indicating that the carousel is not fully out of the way.

This is usually due to an out-of-position switch. It could also be due to the carousel drifting or getting pushed out of its retracted position.

References:

PLC INP17: Carousel-out switch.  Green = closed = fully retracted.  Red = open = not fully retracted
Schematic: Line 85

"8224 ATC NOT READY: CAROUSEL_IN INP"

During an automatic program cycle, with no tool change in progress, the carousel-advanced switch was closed, suggesting that the carousel is advanced under the spindle.

This is usually due to an out-of-position switch. It could also be due to the carousel having been left in the advanced position after a failed tool change.

If the carousel is advanced, use the Maintenance Mode controls to retract it.

References:

PLC INP18: Carousel-in switch.  Green = closed = fully advanced.  Red = open = not fully advanced
Schematic: Line 85

"9225 CAROUSEL IN/OUT BOTH ON"

The carousel-in and the carousel-out switches were both closed at the same time.

This indicates faulty switches or damaged wiring.

References:

PLC INP17: Carousel-out switch.  Green = closed = fully retracted.  Red = open = not fully retracted
PLC INP18: Carousel-in switch.  Green = closed = fully advanced.  Red = open = not fully advanced
Schematic: Line 85

"8241 ATC MOVE Z AXIS TIMEOUT"

During an automatic tool change, the PLC requested that the CNC move the head into its initial position (tool-changing height), but the CNC did not report the move complete within the allowed time.

This can occur if Z axis movement is slowed or paused during the tool change. Avoid pressing Feed Hold while a change is in progress.

"8242 ATC NEW TOOL ROTATION TIMEOUT"

During an automatic tool change, carousel rotation to the requested tool did not complete within the allowed time.

"8243 ATC ORIENT TIMEOUT"

During an automatic tool change, the spindle did not reach and hold its orient position within the allowed time.

References:

PLC MEM34: Orient complete flag.  Green = 1 = in orient.  Red = 0 = out of orient

"8244 ATC UNCLAMP TIMEOUT"

During an automatic tool change, the drawbar failed to open and release the old tool within the allowed time.

References:

PLC OUT30: Tool-unclamp solenoid.  On = open drawbar, unclamp tool
PLC INP31: Tool-unclamped switch.  Green = closed = fully unclamped.  Red = open = not fully unclamped
Schematic: Lines 92, 134

"8245 ATC CLAMP TIMEOUT"

During an automatic tool change, the drawbar failed to close and grip the new tool within the allowed time.

References:

PLC OUT30: Tool-unclamp solenoid.  On = open drawbar, unclamp tool
PLC INP30: Tool-clamped switch.  Green = closed = fully clamped.  Red = open = not fully clamped
Schematic: Lines 91, 134

"8246 ATC END TIMEOUT"

During an automatic tool change, the CNC did not acknowledge the completion signal from the PLC within the allowed time.

"8251 ATC CAR IN NOISE"

While advancing the carousel to the spindle during an automatic tool change, the PLC saw the carousel-in switch close in significantly less time than it should have taken for the carousel to move.

This suggests a false input, caused by noise or by a faulty switch.

References:

PLC INP18: Carousel-in switch.  Green = closed = fully advanced.  Red = open = not fully advanced
Schematic: Line 85

"8252 ATC CAR IN TIMEOUT"

During an automatic tool change, the carousel did not advance under the spindle within the allowed time.

This may be due to an obstruction (such as an unexpected tool in the put-back pocket); or due to a pneumatic failure (so that the carousel did not move at all); or due to a faulty or out-of-position sensor (so that the PLC did not recognize that the carousel was fully advanced).

References:

PLC INP18: Carousel-in switch.  Green = closed = fully advanced.  Red = open = not fully advanced
Schematic: Line 85

"8253 ATC CAR IN ORIENT LOST"

During an automatic tool change, while waiting for the carousel to advance in to the spindle, spindle orientation was lost.

"8255 ATC HEAD UP TOOL NOT UNCLAMPED"

During an automatic tool change, while waiting for the CNC to move the head up off of the old tool, the tool-unclamped switch opened.

This suggests that the drawbar failed to remain open, and perhaps that the tool is once again gripped in the spindle.

Check that the air supply is adequate, and that the drawbar cylinder is not leaking.

References:

PLC INP31: Tool-unclamped switch.  Green = closed = fully unclamped.  Red = open = not fully unclamped
Schematic: Line 92

"8257 ATC HEAD UP TIMEOUT"

During an automatic tool change, the PLC requested that the CNC move the head up to get clear of the just-released tool, but the CNC did not report the move complete within the allowed time.

This can occur if Z axis movement is slowed or paused during the tool change. Avoid pressing Feed Hold while a change is in progress.

"8258 ATC HEAD DOWN TIMEOUT"

During an automatic tool change, the PLC requested that the CNC move the head down to engage the new tool, but the CNC did not report the move complete within the allowed time.

This can occur if Z axis movement is slowed or paused during the tool change. Avoid pressing Feed Hold while a change is in progress.

"8259 ATC HEAD DOWN TOOL NOT UNCLAMPED"

During an automatic tool change, while moving the head down to engage the new tool, the tool-unclamped switch opened.

This suggests that the drawbar failed to remain open, which would result in a crash against the pull stud of the new tool.

References:

PLC INP31: Tool-unclamped switch.  Green = closed = fully unclamped.  Red = open = not fully unclamped
Schematic: Line 92

"8261 ATC CAR OUT NOISE"

While retracting the carousel away from the spindle during an automatic tool change, the PLC saw the carousel-out switch close in significantly less time than it should have taken for the carousel to move.

This suggests a false input, caused by noise or by a faulty switch.

References:

PLC INP17: Carousel-out switch.  Green = closed = fully retracted.  Red = open = not fully retracted
Schematic: Line 85

"8262 ATC CAR OUT TIMEOUT"

During an automatic tool change, the carousel did not retract away from the spindle within the allowed time.

This may be due to an obstruction; or due to a pneumatic failure (so that the carousel did not move at all); or due to a faulty or out-of-position sensor (so that the PLC did not recognize that the carousel was fully retracted).

References:

PLC INP17: Carousel-out switch.  Green = closed = fully retracted.  Red = open = not fully retracted
Schematic: Line 85

"8263 ATC PUTBACK ROTATION TIMEOUT"

During an automatic tool change, carousel rotation back to the storage location for the tool in the spindle did not complete within the allowed time.

"8270 M15 FAULT NO ORIENT/ZERO SPEED"

The Maintenance Mode M15 code was programmed, to unclamp the tool from the spindle, but the spindle was still running.

References:

PLC INP12: Spindle zero-speed signal.  Green = zero speed (stopped).  Red = running
PLC MEM21: Spindle run request.  Green = run.  Red = stop
PLC MEM25: Spindle-stopped flag.  Green = stopped.  Red = running
Schematic: Lines 9, 79

"5100 BAD MESSAGE VALUE"

The PLC program requested display of a message on the screen, but the provided message code was not valid.

This indicates an error in the PLC program. Report the message to your dealer, along with the value in PLC variable W16.

References:

PLC W16: stores the invalid message code

"510n Unconfigured Mini PLC nn Found"

The PLC hardware detected the presence of an I/O expansion board, but the setting of Machine Parameter 900 did not tell it to expect that board in the system.

On the basic ATC systems supported here, there should be one I/O expansion board installed, and Machine Parameter 900 should be set to 1.0.

References:

PLC W36: bitmap of detected PLC expansion boards.  1 = one board detected
Machine Parameter 900: bitmap of expected PLC expansion boards.  1 = one board expected

"4053 Select Auto Spindle, press CYCLE START"

The program attemped to run an M3 spindle-start code, but the control is still in Manual Spindle mode.

Press the SPIN AUTO/MAN key in the top row of the operator panel to select Auto mode (LED on); then press CYCLE START to resume program operation.

"4054 Select Auto Coolant, press CYCLE START"

The program attemped to run an M8 flood-coolant code, but the control is still in Manual Coolant mode.

Press the Coolant AUTO/MAN key on the left side of the operator panel to select Auto mode (LED on); then press CYCLE START to resume program operation.

Optionally, if you choose to run the job without coolant, you can press CYCLE START to resume operation without switching back to Auto coolant control.

"2021 Axis Faults Cleared"

A previous servo drive fault condition has been resolved, and cleared with Emergency Stop.

"2024 PLC Faults Cleared"

A previous PLC fault condition has been resolved, and cleared with Emergency Stop.

"2035 KEYBOARD JOGGING DISABLED"

You inadvertently pressed a keyboard combination that is used for keyboard jogging controls, but keyboard jogging features have been disabled on this machine.

"2099 Message Cleared"

A previous fault condition has been cleared with Emergency Stop.

"2185 TOOL NOISE FAULT CLEARED"

This message should appear after an 8181 or 8183 error (see above), when you jog the carousel back into a known position.

"2201 --- ATC INITIALIZED ---"

This message is displayed after an M18 or ATC Init operation, to show that the PLC has updated its carousel-position and tool-number values.

Wiring Schematics

Schematic Page 1 - Power and drives, logic supplies, Oak unit, M400 console
Schematic Page 2 - PLC inputs and outputs

18-Jun-2024 MBL