12 Appendix
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12 Appendix
12.1 Self-diagnosis code table
Display self diagnosis error code: It saves error codes which correspond with error lamp
flash and appropriate module code.
Self diagnosis code: When operating PLC program, it executes ‘refresh input–executing
program–refresh output–self diagnosis’ repeatedly. The latest detected error is displayed
(UW6540) to self error code special device[F140] according to following error code during
executing self-diagnosis.
Type Cause of error
0X0010 Watchdog error Scan time excesses watchdog timer setting value
0X0020 Memory error
When a certain area of memory is the un-
approached state.
0x0021 Battery error When battery value is below the standard level
0x0022 RTC setting error Disable to set RTC and RTC operation error
0X0030 Program instruction error
When the program contains instructions that are not
able to read and inappropriate forms.
0X0031 Program sequence error
When there is not the instructions required to
process the program, such as user defined functions,
label name, END, RET and IRET, etc.
0X0040 Parameter setting error
When there are some problems in settings for
common and expansion parameters.
0X0041 Time-driven error
When it operates longer than the given time-driven
run-time.
0X0050
Extended module setting
error
In case the hardware constructions are different from
previous parameter settings when applying power
again and changing the mode.
0X0051
Extended module
attaching and removing
error
When the extended module is attached or removed
in run mode.
0x0060 Communication fail error
When it is received NAK and data format not able to
read.
0x0061
Communication format
error
When there are some problems occurred in formats
(excess of limited range etc.) and CHECK SUM while
download and upload.
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