Omron CJ Series User Manual

7-15
7 Troubleshooting and Maintenance
CJ-series PROFIBUS Master Unit Operation Manual for NJ-series CPU Unit (W509)
7-4 Troubleshooting the Network
7
7-4-2 Troubleshooting the Network using CX- ConfiguratorFDT
Local Parameter Load Error
(Valid Configuration Indicator will be
OFF)
An error has occurred, when loading the configuration from the non-volatile
memory to the volatile memory at start up.
Most likely causes:
• A failure or interruption during the writing process.
• A faulty parameter setting which makes initialization of the PROFIBUS inter-
face impossible.
To correct this:
• Check the parameter settings for incorrect values.
• Restart the Unit.
• Re-download the configuration.
• If the problem persists, replace the PROFIBUS Master Unit.
File read error is TRUE
(Valid Configuration Indicator will be
OFF)
An error has occurred, when loading the configuration from the non-volatile
memory to the volatile memory at start up.
Most likely causes:
• A failure or interruption during the writing process.
• A failure during the reading process.
To correct this:
• Restart the CPU Unit, to re-download the configuration.
• If the problem persists, use CX-ConfiguratorFDT to re-download the config-
uration.
Parameter error: TRUE
(Valid Configuration Indicator will be
OFF)
An error has occurred initializing the PROFIBUS interface after reading the
parameter sets from the non-volatile memory to the volatile memory.
Most likely cause:
• A faulty parameters has been downloaded to the Unit.
To correct this:
• Check the parameter settings in CX-ConfiguratorFDT and correct them if
necessary. After correction, perform a download of the new parameters to
the Unit.
Disturbed bus Error: TRUE An error has occurred in the PROFIBUS interface, with distorted messages
received by the PROFIBUS Master Unit.
Most likely causes:
• No or invalid termination or no inductors used at high baud rates.
• Faulty wiring.
To correct this:
• Check the termination on the appropriate devices.
• Restart the CPU Unit, to re-download the configuration.
• If the problem persists, use CX-ConfiguratorFDT to re-download the config-
uration.
• If the problem persists, replace the PROFIBUS Master Unit.
PROFIBUS protocol error: TRUE
(OFFLINE indicator will be ON)
An error has occurred in the PROFIBUS interface with distorted messages
received by the PROFIBUS Master Unit.
Most likely causes:
• Lost token messages (the token is not returned).
To correct this:
• Check the master devices on the network, and make sure they are all work-
ing correctly.
• After correction, switch the Unit to CLEAR / OPERATE mode again.
Indicators Description/Correction

Omron CJ Series Specifications

General

Brand	Omron
Model	CJ Series
Category	Controller
Language	English