Omron CJ Series Operation Manual page 263

Effects User program
System-defined Variable
variables
*_MstrProtErr
Cause and cor- Assumed cause
rection
Network wiring problems.
Other faulty devices on the network.
Attached None
information
Precautions/ When a PROFIBUS Protocol Error is present, the Master Unit is switched to OFFLINE mode.
Remarks
Event name Hardware Error
Meaning An error has occurred on the bus.
Source Function Module
Error attributes Level
Effects User program
System-defined Variable
variables
*_MstrHwErr
Cause and cor- Assumed cause
rection
Faulty wiring, broken message, short
circuits, faulty bus timings or an active
device has been detected beyond the
Highest Station Address setting
(HSA).
Attached None
information
Precautions/ None
Remarks
CJ-series PROFIBUS Master Unit Operation Manual for NJ-series CPU Unit (W509)
Continues Operation
Data type
BOOL
Correction
Check the wiring.
Isolate and remove the faulty device.
Source details
Recovery
Minor
Operation
Continues
Data type
BOOL
Correction
• Check the network wiring.
• Check for short-circuits.
• Check the bus timing set in CX-
ConfiguratorFDT
• Check the HSA setting in the DTM's
Bus Parameter tab.
• Check if any faulty devices are on
the network.
7 Troubleshooting and Maintenance
During network operation the Unit detectsprotocol errors
and will switch to OFFLINE mode.
Name
PROFIBUS Protocol error
Prevention
Follow specific wiring guidelines set in
this manual.
---
Event code 88060000 hex
CJ-series Unit Detection
timing
Switch the Unit to Log category
CLEAR/OPER-
ATE mode again
During network operation the Unit detects Hardware
Errors and will switch to OFFLINE mode.
Name
Hardware Error
Prevention
--
At network opera-
tion
System
7
7-31