361
Part 3 Maintenance
Code Message Description
20C CSTR-ON during
operation
This message indicates that a start command signal (CSTR) was changed to “1”
by the PLC while the actuator was moving, and that duplicate movement
commands occurred as a result.
20E Soft limit over This message indicates that a soft limit was reached.
210 HOME-ON during
operation
This message indicates that the home return signal (HOME) was changed to “1” by
the PLC while the actuator was moving, and that duplicate movement commands
occurred as a result.
221 Write prohibited in
monitor mode
This message indicates that an attempt was made to write position table data or
parameter in the monitor mode.
223 Operation prohibited n
monitor mode
This message indicates that an attempt was made to move the actuator in the
monitor mode.
301 Overrun error (M)
302 Framing error (M)
304 SCIR-QUE OV (M)
305 SCIS-QUE OV (M)
306 R-BF OV
308 Response timeout (M)
30A Packet R-QUE OV
30B Packet S-QUE OV
These messages indicate that an error occurred during serial communication with
the controller.
Cause: [1] Garbage data due to the effect of noise
[2] Duplicate slave station numbers when multiple controllers are
controlled by serial communication
Action: [1] Adjust the wiring in a manner eliminating the effect of noise and
review the installation of equipment, etc.
[2] Change the slave station numbers to avoid duplication.
If the message is still displayed after taking the above actions, please contact IAI.
307 Memory command
denied
This message indicates that a command was denied during serial communication
with the controller.
309 Write address error This message indicates that an indeterminate WRITE address error occurred
during serial communication with the controller.
These conditions do not occur in normal operations. Should they occur, record the
entire error list before cutting off the power for use in the cause investigation.
Also contact IAI.
30C No connected axis This message indicates that no controller address is recognized.
Cause: [1] The controller is not operating properly. (power supply error, failure,
etc.)
[2] Only the supplied communication cable (SGA/SGB) is disconnected.
[3] If a SIO converter is used, 24V is supplied to the converter but the
link cable is not connected.
[4] The ADRS switch settings are duplicated by mistake when multiple
controllers are linked.
Action: [1] Check if the RDY lamp on the controller is lit. If the lamp is not lit, the
controller is faulty.
[2] If a spare teaching pendant is available, replace the current pendant
with the spare unit, or with a PC, and see if the message disappears.
[3] Supply the power after connecting the link cable between the
converter and controller.
[4] Make sure the ADRS switch settings are not duplicated.
If the message is still displayed after taking the above actions, please contact IAI.
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