Self-Diagnostic Functions; Identifying Errors - Omron CPM2C-S100C Operation Manual

Self-diagnostic Functions

9-2

Self-diagnostic Functions

9-2-1

Identifying Errors

Fatal and Non-fatal Errors
Communications Errors
d) Use a Programming Device to set the CPM2C-S to PROGRAM mode.
2. I/O Wiring Checks
a) With the CPM2C-S in PROGRAM mode, check the output wiring by
turning ON the output bits with the force set and force reset operations.
Refer to 8-2-26 Force Set, Reset for details.
b) Check the input wiring with the CPM2C-S' input indicators or a Pro-
gramming Device's monitor operations.
3. Test Run
a) Use a Programming Device to set the CPM2C-S to RUN or MONITOR
mode and check that the "RUN" indicator lights.
b) Check the sequence of operation with the force set/reset operations,
etc.
4. Debugging
Correct any programming errors that are detected.
5. Saving the Program
a) Use a Programming Device to write the program to a backup floppy
disk.
b) Print out a hard copy of the program with a printer.
Note Refer to SECTION 8 Using Programming Devices for details on the Support
Software and Programming Console operations.
The CPM2C-S is equipped with a variety of self-diagnostic functions to help
identify and correct errors and reduce down time.
An error can be identified by the error message displayed on a Programming
Device, error flags in the AR and SR areas, and the error code output to
SR 253.
PC errors are divided into 2 categories based on the severity of the errors.
The status of the ERR/ALM indicator (lit or flashing) shows which type of error
has occurred.
ERR/ALM Lit (Fatal Error)
Fatal errors are serious errors which stop CPM2C-S operation. There are two
ways to restart operation:
• Turn the PC OFF and then ON again.
• Use a Programming Device to switch the PC to PROGRAM mode, and
read/clear the error.
ERR/ALM Flashing (Non-fatal Error)
Non-fatal errors are less serious errors which don't stop CPM2C-S operation.
The LED indicators and AR area flags indicate when a CompoBus/S commu-
nications error, RS-232C port error, or peripheral port error has occurred.
CompoBus/S Communications Error
When an error occurs in CompoBus/S communications, the SD and RD indi-
cators will be OFF and the ERC indicator will be ON. Check the Slaves and
the transmission lines and restart communications.
Section 9-2
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