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Posted: 2024-02-21 06:09 PM
Modbus serial communication is being performed using the BMX NOM0200 model.
I used Read_var, and the following phenomenon has occurred, so I want to get help.
Master (PLC) – Slave (Laptop): PLC is requesting 0A(10) data with function code 4 and sending 10 to laptop.
However, the value is not updated in PLC and has the latest value as below.
Please check the attached project file and review if there is any abnormality.
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Posted: 2024-02-21 09:05 PM
Have you contacted your technical support team?
If you have any issues please check the format of the address you use. Specifically you need to use one of the ADDM or ADDMX functions to encode the appropriate address and then apply the output of this to the read_var instruction. This is most likely in the form of 'rack.slot.channel.slave address'.
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