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Self-diagnostic Functions
Section 9-2
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
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.
9-2
Self-diagnostic Functions
The CPM2C-S is equipped with a variety of self-diagnostic functions to help
identify and correct errors and reduce down time.
9-2-1
Identifying Errors
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.
Fatal and Non-fatal Errors
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.
Communications Errors
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.
Summary of Contents for CPM2C-S100C
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