If the PLC reports an error of 6345 or similar to 7304, what causes it?
1.The reason for the abnormality is that the data reception timed out during COM2 port communication.
Solution:Confirm whether the data configuration of COM2 port is correct.
2.The program is written incorrectly, and an unknown device is read or written, causing communication timeout. Please check the program.
3.If the communication device can read and write normally, but this error still occurs, it may be caused by multiple write operations at the same time. At this time, this error can be ignored. Because the RS instruction is written multiple times at the same time, it will cause this error to occur, but it will not affect the actual use.