Omron CQM1-ARM21, Operation Manual

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Troubleshooting
Section 6-2
57
6-2-4 AS-Interface Communication Problems
After successfully configuring the AS-Interface network, the following
symptoms may indicate errors in the proper operation.
Symptom Possible cause Possible remedy
Slave is not included in the permanent
configuration, and Unit is in Protected Mode. Add the slave to the permanent configuration
in Configuration Mode (SET switch), or in
Setup Mode (Set_Permanent_Configuration
command), then resume Protected Mode. Slave status LED is
OFF while the slave
is connected
Slave address is above the limit set by the CH
switches. Use only slave addresses within the range
selected by the CH switches (see 2-1-3,
Switches
).
Slave is included in the permanent
configuration, but not active in data exchange. Check the data exchange with the slave via
the allocated IR bits. If necessary, replace the
slave. Slave status LED is
flashing
Slave 0 LED flashing indicates that a slave with
address 0 is detected. Assign a valid address, or remove the slave
with address 0.
Data transmission on the AS-Interface line is
corrupted. Check the installation of the AS-Interface
cable for physical damage, excessive length,
routing near sources of strong interference
Change of operation mode is not allowed. See Configuration Problems
ERR LED ON
The CQM1-ARM21 is defective. Replace the Unit.
The AS-Interface power supply is not
connected or defective. Check the power supply and its connections.
Replace if necessary. APF LED ON
The current consumed by the AS-Interface
master and slaves exceeds the rating of the
power supply. Replace the AS-Interface power supply by a
type with higher capacity, or install repeaters
and a power supply for each section.
System Error Flag
ON ERR LED or APF LED is lit. See above.