IAI America SCON-C - Manual (Page 239)

221
Appendix
Code Message name Description
20C CSTR-ON during operation This message indicates that a movement command signal was turned ON
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.
221 Write prohibited in monitor
mode
This message indicates that an attempt was made to write data to the
position table or any parameter in the monitor mode.
223 Operation prohibited in
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 an error in the serial communication with the
controller.
Cause: [1] Garbage data due to the effect of noise
[2] Duplicate slave 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 numbers to avoid duplication.
If the message is still displayed after taking the above actions, please
contact IAI.
307 Memory command refused This message indicates that the command was refused in the serial
communication with the controller.
309 Write address error This message indicates that an indeterminate WRITE address error
occurred in the serial communication with the controller.
These conditions do not occur in normal operation. 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.
[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 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.