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5-7SectionTroubleshooting Flowcharts
81
CompoBus/S Transmission Error Check
Is the RD indica-
tor lit?
End
ERC indicator lit.
Check the transmission lines for broken lines, short
circuits, or incorrect termination resistance.
Check the CompoBus/S communications mode setting.
Check all of the Slaves’ power supplies.
No
Yes
Is the Peripheral
Device Error Flag
set to ON?
Is the RD indicator lit?
No
Yes
No
Check the corre-
sponding Slave’s
power supply,
wiring, and the
Unit itself.
Yes
Replace the SRM1.
Check the Slave’s
status using the
Peripheral Device
Error Flag.
Any error with the
corresponding
Slave?
No
Eliminate the
error in the Slave.
Is the ERC indicator
lit?
Yes
No