Hi everyone,
Currently I am trying to communicate one device over Modbus protocol that has register address of Coil (1 – 4).
The data is visible on Modbus tester only when the register length set to 8. It means to read coil status 1 -4, I need to read 8 Number of registers in the Modbus tester. Then only slave device respond.
Now with SCADA It is compulsory for me to send the query with exact 8 nos of register to read.
For that I tried to create 8 variable tags (coils 1 – 8). But not succeeded. I tried the same by reducing [Modbus]Block = 8 but not succeeded.
The IO device kernel shows “address out of range”
I can read the holding register from the slave device. Only the problem is with coil.
Has anyone faced this type of scenario earlier?
