Troubleshooting Flowcharts - Omron SYSMAC CPM2B Operation Manual

Troubleshooting Flowcharts

Message FALS
No.
I/O BUS ERR C0
I/O UNIT OVER E1
SYS FAIL FALS** 01 to 99 A FALS(07) instruction has been executed in the program. Check the FALS number to
(** is 01 to 99 or 9F.)
9F
8-4

Troubleshooting Flowcharts

Main Check
166
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Meaning and appropriate response
An error has occurred during data transfer between the CPU Board and an Expansion I/
O Board. Check the Board's connecting cable.
Too many Expansion I/O Boards have been connected. Check the Board configuration.
determine the conditions that caused execution, correct the cause, and clear the error.
The cycle time has exceeded the Maximum (Watch) Cycle Time setting (DM 6618).
Check the cycle time and adjust the Maximum Cycle Time setting if necessary.
Use the following flowcharts to troubleshoot errors that occur during opera-
tion.
Error
PWR indicator lit?
Yes
RUN indicator lit?
Yes
ERR indicator
flashing?
Not lit
Is I/O sequence
normal?
Yes
Operating
environment normal?
Yes
Replace the CPU
Board.
No
Check power supply. (See page 167.)
No
Operation stopped. Check for fatal errors.
(See page 167.)
Flashing
Check for non-fatal errors. (See page 169.)
No
Check I/O. (See page 170.)
No
Check operating environment. (See page 172.)
Section 8-4