Mitsubishi Electric Q172CPU Programming Manual page 80

4 POSITIONING DEDICATED SIGNALS
(10) Real/virtual mode switching status flag (M2044)
This flag checks the switching competion between the real and virtual modes,
and the current mode.
• This flag turns off with during the real mode or switching completion from the
virtual to real mode.
• This flag turns on with switching completion from the real to virtual mode.
It can be used as an interlock for the servo program start or control change
(speed change, current value change).
(11) Real/virtual mode switching error detection flag (M2045)
This flag is used as judgement of the error available/not available at the mode
switching (between the real and virtual modes).
• This flag remains off if no error was detected at mode switching.
• This flag turns on if an error was detected at mode switching.
In this case, the error code is stored in the D9193.
(12) Out-of-sync warning flag (M2046) ............................. Status signal
(a) This signal turns on mode when a discrepancy of synchronized positions
between the drive module and output module occurs during the virtual
mode.
It is used as judgement for validity of the continuation operation when the
drive module has stopped.
• M2046 : ON...............Continuation operation disabled
• M2046 : OFF .............Continuation operation enabled
(b) This flag turns on the following cases.
• Stop by the forced stop.
• The servo error in the output module.
(c) When the out-of-sync warning flag turns on, resume operation by the
following procedure.
1) Return to the real mode and eliminate the error cause.
2) Synchronize the axes.
3) Turn the out-of-sync warning flag (M2046) off.
4) Switch to the virtual mode.
5) Resume operation.
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.............. Status signal
.............. Status signal