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Looking through the standard for modbus, there are commands to read registers. There are some for 0x references, coils. Then Read 1x references, holding registers (4x references)...
What does this mean?
I have a Loop powered device that the user may want to know the 4mA, 20mA span points, the damping value, the engineering units etc
So i really want to know where i should be putting my data in terms of the modbus registers.
Also how does the master on RS485 networks determine the addresses for the slaves? HART sends a command and gets the slave address from the reply does modbus have something similar?
What does this mean?
I have a Loop powered device that the user may want to know the 4mA, 20mA span points, the damping value, the engineering units etc
So i really want to know where i should be putting my data in terms of the modbus registers.
Also how does the master on RS485 networks determine the addresses for the slaves? HART sends a command and gets the slave address from the reply does modbus have something similar?