Checking Absence/Presence Of Errors - Mitsubishi MELSEC iQ-F FX5 User Manual

Checking absence/presence of errors

Confirm whether an error has not occurred in the PLCs at the master or slave station. To confirm, check the following flags.
Parallel link operation
"Parallel link operation" flag is ON while the parallel link is running. Verify that the device specified in the table below is ON.
FX5 dedicated
SM9090
Serial communication error
■Error flags
If a communication error occurs in the parallel link, the serial communication error flag turns ON.
Verify that the device specified in the table below is ON.
FX5 dedicated
CH1 CH2 CH3
SM8500 SM8510 SM8520
■Error code
When the serial communication error flag turns ON, the error code is stored in the device specified in the table below.
FX5 only
CH1 CH2 CH3
SD8500 SD8510 SD8520
Error code
The error codes (hexadecimal) stored in the devices for error code are as follows. When an error occurs, check the following
error codes.
Error code Error name
(Hexadecimal)
2220H Parameter not detected
2221H Parameter error
7001H Communication CH parameter setting duplication error
7010H Parity error, overrun error or framing error
7812H Parallel link character error
7813H Parallel link sum error
7814H Parallel link format error
FX3 Series
compatible
SM8072
FX3 Series
compatible
CH4 CH1 CH2
SM8530 SM8063 SM8438
FX3 Series
compatible
CH4 CH1 CH2
SD8530 SD8063 SD8438
Name Descriptions
Parallel link operation ON: In normal running state
OFF: In stopped state
Name Descriptions
Serial communication error Turns ON when an error occurs in serial
communication.
Name Descriptions
Serial communication error Stores the error code when a serial
code communication error occurs.
Error handling
Write the project again.
Correct the setting value of the parameter and write the project
again.
Confirm whether the serial port is not used for other
communication. (Page 64)
Check the wiring. (Page 54)
3 PARALLEL LINK FUNCTION
65
3.8 Troubleshooting
3