Mitsubishi Electric FX5 User Manual page 347

Serial communication
The special relays for serial communication are shown below.
R: Read only, R/W: Read/Write
No. Name
SM8500 Serial communication error (ch1)
SM8510 Serial communication error (ch2)
SM8520 Serial communication error (ch3)
SM8530 Serial communication error (ch4)
SM8560 Data transfer delayed (ch1)
SM8561 Data transfer flag (ch1)
SM8562 Receive completion flag (ch1)
SM8563 Carrier detection flag (ch1)
SM8564 Data set ready flag (ch1)
SM8565 Time-out check flag (ch1)
SM8570 Data transfer delayed (ch2)
SM8571 Data transfer flag (ch2)
SM8572 Receive completion flag (ch2)
SM8573 Carrier detection flag (ch2)
SM8574 Data set ready flag (ch2)
SM8575 Time-out check flag (ch2)
SM8580 Data transfer delayed (ch3)
SM8581 Data transfer flag (ch3)
SM8582 Receive completion flag (ch3)
SM8583 Carrier detection flag (ch3)
SM8584 Data set ready flag (ch3)
SM8585 Time-out check flag (ch3)
SM8590 Data transfer delayed (ch4)
SM8591 Data transfer flag (ch4)
SM8592 Receive completion flag (ch4)
SM8593 Carrier detection flag (ch4)
SM8594 Data set ready flag (ch4)
SM8595 Time-out check flag (ch4)
SM8740 Station No. setting SD latch enabled (ch1)
SM8750 Station No. setting SD latch enabled (ch2)
SM8760 Station No. setting SD latch enabled (ch3)
SM8770 Station No. setting SD latch enabled (ch4)
SM8800 MODBUS RTU communication (ch1)
SM8801 Retry (ch1)
SM8802 Timeout (ch1)
Description
OFF: No error
ON: Error
OFF: No error
ON: Error
OFF: No error
ON: Error
OFF: No error
ON: Error
This device remains ON while the PLC is waiting to send.
When this device is set to ON, the PLC starts to send.
This device turns ON when receiving is completed.
This device turns ON in synchronization with the CD (DCD) signal.
This device turns ON in synchronization with the DR (DSR) signal.
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.
This device remains ON while the PLC is waiting to send.
When this device is set to ON, the PLC starts to send.
This device turns ON when receiving is completed.
This device turns ON in synchronization with the CD (DCD) signal.
This device turns ON in synchronization with the DR (DSR) signal.
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.
This device remains ON while the PLC is waiting to send.
When this device is set to ON, the PLC starts to send.
This device turns ON when receiving is completed.
This device turns ON in synchronization with the CD (DCD) signal.
This device turns ON in synchronization with the DR (DSR) signal.
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.
This device remains ON while the PLC is waiting to send
When this device is set to ON, the PLC starts to send
This device turns ON when receiving is completed
This device turns ON in synchronization with the CD (DCD) signal
This device turns ON in synchronization with the DR (DSR) signal
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
OFF: Latch disabled
ON: Latch enabled
OFF: Latch disabled
ON: Latch enabled
OFF: Latch disabled
ON: Latch enabled
OFF: Latch disabled
ON: Latch enabled
OFF: Communication stop
ON: Communication
OFF: No retry
ON: Retry
OFF: No timeout
ON: Timeout
R/W
R
R
R
R
R
R/W
R/W
R
R
R
R
R/W
R/W
R
R
R
R
R/W
R/W
R
R
R
R
R/W
R/W
R
R
R
R
R
R
R
R
R
R
APPX
Appendix 1 Special Relay List
A
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