Mitsubishi Electric MELSEC iQ-F FX5 - Serial communication function

APPX
Appendix 1 Special Relay List
715
A
Serial communication function
The special relays for the serial communication function are shown below.
No. Name Description Compatible CPU module R/W
FX5S FX5UJ FX5U/
FX5UC
*1
SM8500 Serial communication error (CH1) OFF: No error
ON: Error
 R
SM8503 Absence/presence of MC protocol (CH1) Turns ON when MC protocol is set for serial
communication.
 R
SM8510 Serial communication error (CH2) OFF: No error
ON: Error
 R
SM8513 Absence/presence of MC protocol (CH2) Turns ON when MC protocol is set for serial
communication.
 R
SM8520 Serial communication error (CH3) OFF: No error
ON: Error
 R
SM8523 Absence/presence of MC protocol (CH3) Turns ON when MC protocol is set for serial
communication.
 R
SM8530 Serial communication error (CH4) OFF: No error
ON: Error
 R
SM8533 Absence/presence of MC protocol (CH4) Turns ON when MC protocol is set for serial
communication.
 R
SM8560 Data transfer delayed (CH1) This device remains ON while the PLC is waiting
to send.
 R
SM8561 Data transfer flag (CH1) When this device is set to ON, the PLC starts to
send.
 R/W
SM8562 Receive completion flag (CH1) This device turns ON when receiving is
completed.
 R
SM8563 Carrier detection flag (CH1) This device turns ON in synchronization with the
CD (DCD) signal.
 R
SM8564 Data set ready flag (CH1) This device turns ON in synchronization with the
DR (DSR) signal.
 R
SM8565 Time-out check flag (CH1) This device turns ON when data receiving is
suspended and the next set of receive data is
not given within the time set by the time-out time
setting device.
 R
SM8570 Data transfer delayed (CH2) This device remains ON while the PLC is waiting
to send.
 R
SM8571 Data transfer flag (CH2) When this device is set to ON, the PLC starts to
send.
 R/W
SM8572 Receive completion flag (CH2) This device turns ON when receiving is
completed.
 R
SM8573 Carrier detection flag (CH2) This device turns ON in synchronization with the
CD (DCD) signal.
 R
SM8574 Data set ready flag (CH2) This device turns ON in synchronization with the
DR (DSR) signal.
 R
SM8575 Time-out check flag (CH2) This device turns ON when data receiving is
suspended and the next set of receive data is
not given within the time set by the time-out time
setting device.
 R
SM8580 Data transfer delayed (CH3) This device remains ON while the PLC is waiting
to send.
 R
SM8581 Data transfer flag (CH3) When this device is set to ON, the PLC starts to
send.
 R/W
SM8582 Receive completion flag (CH3) This device turns ON when receiving is
completed.
 R
SM8583 Carrier detection flag (CH3) This device turns ON in synchronization with the
CD (DCD) signal.
 R
SM8584 Data set ready flag (CH3) This device turns ON in synchronization with the
DR (
DSR) signal.
 R