Related Devices; List Of Related Devices - Mitsubishi Electric FX5 User Manual

When an error code above is stored, check the following items:
Name
Parity, overrun or framing error
Command error
Monitoring time out
The serial communication error flags and serial communication error codes are not cleared even when
communication is restored.
They are cleared when turning OFFON the PLC power or resetting the system.
3.9

Related Devices

List of related devices

Special relay
Device No.
CH1 CH2 CH3
SM8500 SM8510 SM8520
SM8740 SM8750 SM8760
R: Read only
Special register
Device No.
CH1 CH2 CH3
SD8500 SD8510 SD8520
SD8502 SD8512 SD8522
SD8740 SD8750 SD8760
SD8741 SD8751 SD8761
SD8742 SD8752 SD8762
SD8503 SD8513 SD8523
R: Read only
*1 When SD latch setting is set to "latch", device value can be changed in the program or an engineering tool, and by turning power supply
ONOFF or by system reset, the corresponding function can be operated with the changed value.
*2 With latch settings: Read/write
No latch settings: Read only
Description of error
The transfer data is abnormal.
When the station number was FFH, any command
other than "GW" was received.
The received message was insufficient. Because
normal message was not received within the time-
out time setting, the transfer sequence was
initialized.
Name
CH4
SM8530 Serial communication error
SM8770 Station number setting latch
setting valid flag
Name
CH4
SD8530 Serial communication error
code
SD8532 Serial communication settings
SD8770 Station number settings
SD8771 Message system
SD8772 Time-out time setting
SD8533 Serial communication
operation mode
Troubleshooting
Check the transfer specifications set using
parameters, and execute communication again.
Modify the specified command to execute the
communication again.
The message is insufficient. Modify the transfer
program in the counterpart equipment to execute
the communication again.
Description
Turns ON when an error occurs in serial communication.
Turns ON when the SD latch setting of station number setting is
valid.
ON: SD latch setting of station number setting is valid
OFF: SD latch setting of station number setting is invalid
Description
Stores the error code when a serial communication error
occurs.
Stores the setting of the communication parameter.
*1
Sets the station number of a PLC.
Stores the setting of the message system.
These devices set the evaluation time for error when receiving
of data from the counterpart equipment is interrupted.
Stores the communication type being used.
R/W
R
R
R/W
R
R
*2
R
R
R
3 MC PROTOCOL
65
3.9 Related Devices
3