Omron CJ Series User Manual

7-5
7 Troubleshooting and Maintenance
CJ-series PROFIBUS Master Unit Operation Manual for NJ-series CPU Unit (W509)
7-2 Troubleshooting with the PROFIBUS Master Unit Indicators
7
7-2-4 Unit Configuration Errors
Note If operational errors prevent the Unit from functioning correctly, the PRM, BST, COMM and
BF indicators will remain OFF.
Unit configuration errors are errors which occur during download of the new configuration or after
restarting the Unit following a download. The error can be determined by examining the ERC and
the PRM indicators.
The error determination procedure uses the table below. To determine the error
• First find the status of the ERC indicator (left column).
• Move one column to the right and find the PRM indicator status.
The probable error causes are then listed to the right of the third column.
RUN ERH ERC Probable Cause Correction
Not lit Not lit Not lit Power is not being supplied to the
CPU Unit or the power supply voltage
is too low.
Supply power. Make sure that the cor-
rect voltage is being supplied.
The CPU Unit is faulty. Replace the CPU Unit.
The sliders are not properly locked
into place.
Lock the sliders into place.
A fatal error has occurred in the Unit,
preventing it from running any pro-
gram.
Restart the CPU Unit. If the problem
persists, replace the PROFIBUS Mas-
ter Unit.
Lit A fatal error has occurred in the Unit’s
program. The appropriate error code
is stored in the error log.error
Restart the CPU Unit. If the problem
persists, replace the PROFIBUS Mas-
ter Unit.
Lit Not lit Not a valid combination during operation.
Lit Not a valid combination during operation.
Lit Not lit Not lit Unit is functionally correct. If there are still problems, proceed to check on the
other indicators.
Lit A write-verify check failed, while writ-
ing the error log to the non-volatile
memory.
Send a ERROR LOG CLEAR com-
mand to the Unit. Restart the Unit.
A write-verify check failed, while writ-
ing the (new) configuration to the non-
volatile memory.
Check the Parameter set in CX-Con-
figuratorFDT and re-download the
Parameter sets from CX-Configura-
torFDT.
If the problem persists, replace the
PROFIBUS Master Unit.
Lit Not Lit Memory in the CPU Unit is faulty. Restart the CPU Unit. If the problem
persists, replace the CPU Unit.
The CPU Unit is faulty. Restart the CPU Unit. If the problem
persists, replace the CPU Unit.
A cyclic Monitor time out has
occurred, i.e a timeout on exchange
of data between the Unit and the
CPU.
Restart the CPU Unit. If the problem
persists, replace the PROFIBUS Mas-
ter Unit.
Lit Not a valid combination during operation.
7-2-4 Unit Configuration Errors
ERC PRM Probable Cause Correction
Not lit Not lit Not a valid combination.
Lit No errors. The PROFIBUS DP Parameter set is ready for use.
Flashing No errors. A new configuration is being downloaded from the configurator.

Omron CJ Series Specifications

General

Brand	Omron
Model	CJ Series
Category	Controller
Language	English