REXROTH VisualMotion 9 - 515 PLC Communications Error; 516 More than %D Registration Functions Enabled; 519 Lost Fieldbus;Plc Connection; 520 Fieldbus Mapping Timeout

3-36 Monitoring and Diagnostics VisualMotion 9 Troubleshooting Guide
DOK-VISMOT-VM*-09VRS**-WA02-EN-P
515 PLC Communications Error
Cause:
After initialization, the control monitors the PLC's heartbeat by means of
an internal life counter. The control reads the lifecounter value every
SERCOS cycle and compares it to the previous value. This error is
issued if the life counter value does not change after 10 cycles.
Remedy:
Cycle power to the entire VisualMotion system and reestablish
communication between the PLC and the control.
516 More than %d registration functions enabled
Cause:
The maximum of 4 registration instructions has been exceeded in the
active VisualMotion program. Up to 4 axes can use the registration
function at the same time. This error will be issued at compile time.
Remedy:
Make certain that the active VisualMotion program is only using the
maximum of 4 registration instructions.
519 Lost Fieldbus/PLC Connection
Cause:
A Lost Fieldbus connection is issued when cyclic communications
between the slave and master fieldbus interfaces are no longer present.
This message is issued when register 19 bit 4 transitions from high (1) to
low (0). The error is hardware related and is normally caused by…
1. a bad or disconnected cable.
2. an unused fieldbus interface that is installed but not used.
3. a hardware related problem with the Fieldbus interface on the control.
Note: Shutdown message 519 is only issued while in phase 4 if the
Fieldbus Error Reaction in the Fieldbus Slave Configuration
window for GPP.
Remedy:
4. Check and verify all cable connects between the slave and master
Fieldbus connections.
5. Set C-0-2635, Fieldbus Error Reaction, from 0x0000 (shutdown) to
0x0002 (ignore).
6. Contact Bosch Rexroth Service for assistance.
520 Fieldbus Mapping Timeout
Cause:
The Fieldbus Mapper continually scans the system for sufficient
resources to process the cyclic data mapping list (2600-list). If 10 out of
10 attempts of the mapping list update are missed, the system is
considered to have insufficient resources. Error 520 Fieldbus Mapper
Timeout is generated if the selected error reaction is set as "Shutdown
(default)," (Parameter C-0-2635), in the Fieldbus Slave Configuration
window. Motion to all axes will stop based on the selected error reaction
at each drive.