Hardy HI 6300 Series - Manual (Page 157)

Communications I/O Tabl;es 147
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Appendix A
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Communications I/O Table
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I/O Tables For Communications to PLCs
The following I/O table description is common for the following communication protocol
in the HI 6300 series:
1 Modbus-RTU
For a full list of command parameters, please see Chapter 5 under Communications
Parameters.
OUTPUT Table Description
The first four variables in the output table, Command, Aux Command Information,
Parameter ID, and Parameter Value, are used to send commands to the instrument, write
new parameter values, read existing parameter values, or read data values such as COUNT,
or ROC, etc.
The Command is a 32 bit value, with the top 8 bits indicating the channel (instrument)
number if required, the next 8 bits are reserved, and the bottom 16 bits are used for the
command string as shown below.