Self-diagnosis FunctionsSection 5-3

5-3

Self-diagnosis Functions

 

 

 

The CPM1A is equipped with a variety of self-diagnosis functions to help identify

 

 

 

and correct errors that might occur and reduce down time.

 

 

 

PC errors are divided into 2 categories based on the severity of the errors. Fatal

 

 

 

errors are more serious errors which stop CPM1A operation. Non-fatal errors

 

 

 

are less serious and don’t stop CPM1A operation.

5-3-1

Non-fatal Errors

 

 

 

PC operation and program execution will continue after one or more of these

 

 

 

errors have occurred. Although PC operation will continue, the cause of the error

 

 

 

should be corrected and the error cleared as soon as possible.

 

 

 

When one of these errors occurs, the POWER and RUN indicators will remain lit

 

 

 

and the ERR/ALM indicator will flash.

 

 

 

Message

FAL No.

Meaning and appropriate response

 

 

 

SYS FAIL FAL**

01 to 99

An FAL(06) instruction has been executed in the program. Check the FAL number to

(** is 01 to 99 or 9B.)

 

determine conditions that would cause execution, correct the cause, and clear the

 

 

 

error.

 

 

 

 

 

 

9B

An error has been detected in the PC Setup. Check flags AR 1300 to AR 1302, and

 

 

 

correct as directed.

 

 

 

AR 1300 ON: An incorrect setting was detected in the PC Setup (DM 6600 to

 

 

 

DM 6614) when power was turned on. Correct the settings in PROGRAM Mode and

 

 

 

turn on the power again.

 

 

 

AR 1301 ON: An incorrect setting was detected in the PC Setup (DM 6615 to

 

 

 

DM 6644) when switching to RUN Mode. Correct the settings in PROGRAM Mode

 

 

 

and switch to RUN Mode again.

 

 

 

AR 1302 ON: An incorrect setting was detected in the PC Setup (DM 6645 to

 

 

 

DM 6655) during operation. Correct the settings and clear the error.

 

 

 

SCAN TIME OVER

F8

Watchdog timer has exceeded 100 ms. (SR 25309 will be ON.)

 

 

 

This indicates that the program cycle time is longer than recommended. Reduce cycle

 

 

 

time if possible. (The CPM1A can be set so that this error won’t be detected.)

Communication

None

If an error occurs in communications through the peripheral port, the COMM indicator

Errors (no message)

 

will be off. Check the connecting cables and restart. Check the error flags in AR 0812

 

 

 

ON.

5-3-2

Fatal Errors

 

 

 

 

PC operation and program execution will stop and all outputs from the PC will be

turned OFF when any of these errors have occurred. CPM1A operation can’t be restarted until the PC is turned off and then on again or a Peripheral Device is used to switch the PC to PROGRAM mode and clear the fatal error.

All CPU Unit indicators will be OFF for the power interruption error. For all other fatal operating errors, the POWER and ERR/ALM indicators will be lit. The RUN indicator will be OFF.

!WARNING The PC will turn OFF all outputs when its self-diagnosis function detects any error or when a severe failure alarm (FALS) instruction is executed. External safety measures must be provided to ensure safety in the system. Not providing proper safety measures may result in serious accidents.

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Omron CPM1A Self-diagnosis Functions, Non-fatal Errors, Fatal Errors, Message FAL No Meaning and appropriate response