Modbus device integration to I/A Series R2 requires encode and decode of integer type registers to bytes. In this particular case, the Modbus device is a Patterson-Kelly ENVI boiler where the HIGH byte and LOW byte of a standard Modbus integer represent individual values. However, the solution can be applied to other devices as required.
I/A Series R2, Modbus
Application - integration of Modbus into I/A Series R2
The attached R2 program objects can be used to encode or decode values as required.
ModbusIntToBytes - Program will take the input integer value and decode to individual byte values as float status type values.
ModbusBytesToInt - Program will take individual float status type values and encode bytes to a Modbus integer.