Troubleshooting Flowcharts - Omron SRM1(-V2) Operation Manual

Troubleshooting Flowcharts

5-7

Troubleshooting Flowcharts

Main Check
Use the following flowcharts to troubleshoot errors that occur during operation.
Error
PWR indicator lit?
Yes
RUN indicator lit?
Yes
ERR indicator
flashing?
Yes
ERC indicator
lit?
No
RD indicator lit or
flashing?
Yes
COMM indicator not
lit on any Slave?
No
Is I/O sequence
normal?
Yes
Operating
environment nor-
mal?
Yes
CompoBus/S
Replace the SRM1.
If the LED indicators are all normal (i.e., ERC off, SD lit, and RD lit), yet there is a
communication error, check the following points. (For details on the Slaves, refer
to the CompoBus/S Operation Manual (W266).)
• Are the Slave's I/O power supply and I/O wiring okay?
• Are the Slave's power supply and address settings okay? Is the Slave itself
operating properly?
• Is the termination correctly connected to the end of the transmission line (i.e.
the end farthest from the SRM1)?
No
Check power supply. (See page 78.)
No
Check for fatal errors. (See page 79.)
No
Check for non-fatal errors. (See page 80.)
Yes
Check for CompoBus/S transmission errors.
(See page 81.)
No
Be sure SRM1 and Slaves are in the same
communications mode.
Yes
Be sure SRM1 and Slaves are in the same
communications mode.
No
Check Slave I/O wiring and I/O devices.
No
Check operating environment. (See page 82.)
Section 5-7
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