Error Indicators; Errors During Initial Processing - Omron CJ1W-CT021 Operation Manuals

5 Error Processing, Maintenance and Inspection
5-1

Error Indicators

The RUN-, ERC-, and ERH-LEDs, at the front panel of the High-speed Counter Unit, display the follow-
ing errors.
5-1-1

Errors during initial processing

RUN ERC ERH Error
OFF OFF ON Setup error
OFF ON OFF DM-configuration
error
Unit error
OFF ON ON Unit classification
error
OFF OFF OFF Watch Dog Timer
time-out error
5-2
CT021
RUN ERC ERH
CH1 A B Z I0
CH2 A B Z I1
Probable cause
Incorrect Unit number
Cyclic initial error
Invalid contents of the settings
for device variables for CJ-
series Unit (for setting)
An error occurred in the Unit's
EEPROM, RAM or CPU or a
system software error occurred
The Unit classification was set
incorrectly
The Unit's Watch Dog Timer
has timed out
CJ-series High-speed Counter Units Operation Manual for NJ-series CPU Unit(W492)
O0
O1
Remedy
Set correct Unit number and turn ON
the power again
Check the error code with *_ErrCode1
(error code 1) and *_ErrCode2 (Error
code 2), set the device variables for CJ-
series Unit (for setting) (unit setting)
again correctly. Restart the Unit or reset
the Controller.
Refer to 5-2 Error codes for more infor-
mation on error codes and how to clear
them.
Restart the Unit or reset the Controller.
If errors reoccur, then replace the High-
speed Counter Unit.
Replace the High-speed Counter Unit
Turn OFF and then ON the power again.
If errors reoccurs, then replace the
High-speed Counter Unit