Omron CQM1-ARM21, Operation Manual

Page: 70 / 86

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