3-48 Monitoring and Diagnostics VisualMotion 9 Troubleshooting Guide
DOK-VISMOT-VM*-09VRS**-WA02-EN-P
555 PLC Register Mapping Timeout
The control and PLC can communicate across the DPR's register
channel. The rate in which each device accesses the register channel
varies by device and control firmware.
• PPC-R with GPP09 firmware uses set I/O Mapper scan time
• PPC-P11.1 with GMP09 firmware uses SERCOS Cycle time
C-0-0099
• PLC uses program cycle time
If the control attempts to read or write to the register channel while the
PLC is currently reading or writing data, control parameter C-0-2651 (PLC
Register Channel: Current number of misses) is incremented by a count
of 1. When C-0-2651 reaches a maximum of 10 misses, C-0-2653 (PLC
Register Channel: Timeout counter) increments by 1.
Cause:
This warning error message is issued when control parameter C-0-2635
(Fieldbus/PLC Error Reaction) is set to shutdown (0x0000) and the PLC
Register Channel: Timeout counter (C-0-2653) increments by 1.
556 PLC Lifecounter Timeout
The PLC life counter is incremented by 1 every PLC program cycle.
Every increment is an indication that the PLC is functioning and
communicating properly. The control monitors the PLC life counter value
every SERCOS cycle. If the control does not read a different PLC life
counter value, then C-0-2643 (PLC Lifecounter Check: number of retries)
increments by a count of 1. When C-0-2643 reaches the user-defined
maximum number of misses, C-0-2646 (PLC Lifecounter Check: number
of timeouts) increments by 1.
Cause:
This warning error message is issued when control parameter C-0-2635
(Fieldbus/PLC Error Reaction) is set to shutdown (0x0000) and the PLC
Lifecounter Check: number of timeouts (C-0-2643) increments by 1.
557 PMG%d Maximum allowed deviation window is Zero
Cause:
During PMG group enabling (control register 86), the group's deviation
window is checked for a non-zero value. This error is issued when the
group is enabled and the deviation window is 0 for PMG%d (where %d =
PMG number).
Remedy:
Disable the PMG group and modify the deviation window by selecting
Commission ⇒
⇒⇒
⇒ Position Monitoring Group, double clicking on the
group number and entering a non-zero value. This value can also be
changed by modifying control parameter C-0-32x1, where x = group #
starting at 0.
Example: Group 1 would be C-0-3201 and Group 2 would be C-0-3211,
and so on.
558 PMG%d Only 1 axis parameterized
During system initialization, all parameterized PMG axes are checked.
This error is issued if only one axis was configured for the given PMG%d
(where %d = PMG number).
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