Chapter 7 APPENDIX
Chapter 7
Error Messages and Countermeasures
7-5
ZW
User’s Manual
Error Messages and Countermeasures
■ Starting process errors
(Note)
If error code 3 is displayed, as a temporary measure, you can restart measurement using the Calibra-
tion ROM data read in the previous time.
<Operation method>
With error code 3 displayed on the sub-display, hold down the Mode switching key, then when "OK/
CAN" is displayed, press the ZERO/SET key.
<Caution>
- When using this method, always check the Calibration ROM serial number read in previously in the
"controller information" (p.3-47) and check that it matches the Sensor Head side serial number.
Measurement will not be correct unless they match.
- When restarting the main unit, perform the same operations again.
- This operation is disabled for a controller into which no Calibration ROM has ever been inserted and
started up.
■ Firmware update errors
Error 
code
Abnormality Cause Countermeasure
2 The linearity 
correction data is 
invalid.
The linearity correction value 
loaded from the Calibration 
ROM is corrupt.
Check to make sure that the Calibration 
ROM is correctly inserted.
If the error occurs when it is correctly 
inserted, the Calibration ROM or the 
controller may be broken.
Please contact an OMRON branch or 
sales office. (Note)
3 The linearity 
correction data cannot 
be loaded.
The Calibration ROM is not 
inserted into the controller.
7 The system setting is 
invalid.
The system settings saved 
to the controller are corrupt.
After holding down the Mode switching 
key, press the ZERO/SET key to clear the 
system settings and the bank data, then 
resume the starting process.
8 The bank data is 
invalid.
The bank data saved to the 
controller is corrupt.
Error 
code
Abnormality Cause Countermeasure
11 Unrecoverable error The Warp Engine ZW is 
interrupted during an 
update.
Do not operate the Warp Engine ZW 
during an update.
If this error occurs, turn on the controller 
power again and start over the update.