Omron CQM1-ARM21 Operation Manual page 70

Troubleshooting
Configuration Problems (continued)
Unrecognisable Command was not preceded by No_Command
response to a Setup
Mode command
Unit failed to enter Setup Mode because MOD
switch is ON (Protected Mode).
Error response to a Invalid command argument, slave address out
Setup Mode of range.
command affecting
Non-volatile memory in the Unit (EEPROM) is
Permanent Data
defective.
Error response to a Invalid command argument, unacceptable
Setup Mode slave address.
command affecting
Communication on AS-Interface line disrupted
actual slaves
or slave defective.
Slave address is above the limit set by the CH
switches.
AUP LED is ON, but The new slave does not have the same ID
the defective slave Code and/or I/O Configuration as stored in the
cannot be replaced permanent configuration data.
by a blank slave
The new slave has an address unequal to 0 or
the address of the slave to be replaced.
A slave has failed, The master is in Configuration Mode.
but the AUP LED
remains OFF
More than one slave has failed (check the
slave status LED indicators).
56
Commands
See 4-5-3, , for the correct
sequence of operation.
Check if the Mode Bit (IR n.00) is ON. If not,
first set the MOD switch to OFF (Configuration
Mode)
Then select Setup Mode by setting the Mode
Flag (IR m.01) ON.
Commands
See 4-5-3, , for the correct usage
of Setup Mode Commands.
Replace the Unit.
Commands
See 4-5-3, , for the correct usage
of Setup Mode Commands.
Check the AS-Interface line, power supply
and affected slave(s) for malfunctions or bad
connections.
Use only slave addresses within the range
selected by the CH switches (see 2-1-3,
Switches
).
Replace with the correct type of slave, or add
the new slave while in Configuration Mode or
Setup Mode.
Correct the slave's address with a hand-held
addressing device, or by using the Setup
Mode command Change_Slave_Address.
Correct the new slave's address with a hand-
held addressing device, or by using the Setup
Mode command Change_Slave_Address.
Set the new slaves' addresses with a hand-
held addressing device, or by using the Setup
Mode command Change_Slave_Address.
Section 6-2