Instruction manual

4. SERVO SYSTEM CPU DEVICES

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(8) REAL/VIRTUAL mode status flag (M2044)

........................................................................Signal sent from PCPU to SCPU

This flag verifies that switching between the REAL and VIRTUAL modes is

completed, and verifies the current mode.

• OFF when the REAL mode is in effect, and switching from the VIRTUAL to

REAL mode is completed.

• ON when switching from REAL to VIRTUAL mode is completed.

This flag should be used as an interlock function when executing a servo

program START or a control change (speed change, current value change).

(9) REAL/VIRTUAL mode switching error detection flag (M2045)

....................................................................... Signal sent from PCPU to SCPU

This flag indicates whether or not an error was detected when switching

between the REAL and VIRTUAL modes.

• Remains OFF if no error was detected at mode switching.

• Switches ON if an error was detected at mode switching.

In this case, the error code will be stored at D9193.

(10) Synchronization discrepancy warning flag (M2046)

........................................................................Signal sent from PCPU to SCPU

(a) This signal switches ON in the VIRTUAL mode when a discrepancy occurs

between the drive module and output module synchronized positions.

This signal status determines whether or not drive module operation can

be resumed after it has stopped.

• M2046 : ON...............Continued operation disabled

• M2046 : OFF .............Continued operation enabled

(b) The synchronization discrepancy warning flag will switch ON when the

following conditions occur.

• When operation is stopped by an external emergency stop (EMG)

command.

• When a servo error occurs at the output module.

operation can be resumed by the following procedure.

1) Return to the REAL mode and eliminate the error cause.

↓

2) Synchronize the axes.

↓

3) Switch the synchronization discrepancy warning flag (M2046) OFF.

↓

4) Switch to the VIRTUAL mode.

↓

5) Resume operation.