System Error Codes - Omron CS1W-MC221 - 02-2008 Operation Manual

System Error Codes

12-2-1 Errors During Initial Processing
RUN ERC ERH XCCW XCW YCCW YCW
OFF OFF OFF OFF
OFF OFF ON OFF
OFF ON ON OFF
OFF ON OFF ON
OFF ON OFF OFF
OFF ON OFF OFF
OFF ON OFF OFF
12-2-2 Errors During Normal Operation
RUN ERC ERH XCCW XCW YCCW YCW
ON OFF OFF ---
ON OFF ON OFF
ON ON OFF OFF
ON ON OFF OFF
12-3 System Error Codes
Explanation of Tables
532
The following table shows the errors that occur during the MC Unit's initializa-
tion processing.
OFF OFF OFF Watchdog timer
timeout error
OFF OFF OFF Setup error
OFF OFF OFF Unit classification
error
OFF OFF OFF EEPROM error
ON OFF OFF RAM error
OFF ON OFF CPU error
OFF OFF ON System software error The system software is
--- --- --- (Normal)
OFF OFF OFF PLC error
OFF OFF OFF Unit error
OFF ON OFF CPU error
Error codes are explained in 12-3 System Error Codes to 12-5 Axis Error
Codes.
The error code that occurs first will be output to word n+11 (MC221) or n+19
(MC421) in the PLC Interface Area.
When a system error occurs, the Error Flag turns ON in the PLC Interface
Area and an error code is output. With the MC221, bit 14 of word n+10 turns
ON, and a 4-digit error code is output in hexadecimal to word n+11. With the
MC421, bit 14 of word n+18 turns ON, and a 4-digit error code is output in
hexadecimal to word n+19. The meanings of the error codes are explained in
the error code tables provided on the following pages.
Under the Code heading, the 4-digit hexadecimal code that is output by the
MC Unit is given first. The number given below it in parentheses is the way it
appears when decimal display is selected at the Programming Console.
Error Probable causes
The MC Unit's watchdog
timer has timed out.
One of the following
setup errors occurred:
Illegal unit number
Unit number duplication
Cyclic initial error
Unit number setting error
The Unit classification
was incorrectly set.
An error occurred in
EEPROM.
An error occurred in
RAM.
An error occurred at the
CPU.
damaged.
Error Probable causes
---
One of the following errors
occurred at the CPU Unit:
Watch dog timer operation
Bus error
Cyclic monitor error
An error occurred at the
MC Unit.
An error occurred at the
MC Unit's CPU.
Section 12-3
Remedy
Replace the
MC Unit.
Set the
correct unit
number and
turn ON the
power again.
Replace the
MC Unit.
Remedy
---
Extend the cyclic
monitor time. If the
error recurs, replace
the CPU Unit.
Check the error
code and apply the
appropriate remedy.
Replace the MC
Unit.