M552 4X Registers
The
registers are listed with their Modbus addresses.
The data held at these addresses are Read-Only, Write-Only or Read+Write
as indicated below.
4X registers are read using function 03h and written using function 10h.
For M552 transducers, the write functions require the
General
Pass Code to be valid.
A sample write packet will look like this:-
[Node][10][start address][No. of Double Registers][Data length in bytes][CRC(2
bytes)]
e.g. To set Node 23h System Voltage
to 120:280 (280V is M552 ac nominal input voltage)
The VT Primary and VT Secondary values set the System Voltage (viewed at 40001).
The VT Secondary matches the nominal input of the M552:-
[23h][10h][001Ch][0004h(4, 2 byte regs)][08h(2, 4 byte regs)][42F00000][438C0000][CRC(2 bytes)]
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