4 Configuring the device
4.4 MODBUS register
NZM-XMC Measuring and Communication Module
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4.4.1 Electrical parameters
Registers 0 to 95 (or 287) store the electrical values measured by the device
(actual values).
Two Modbus registers are required for each value. This means that each
parameter represents a register with a length of 32 bits (of “signed long”
type).
The register with the even numbers (left side of the “Register” column
in Table 9) contains the high section of the integer value, while the register
with the odd numbers (right side of the “Register” column in Table 9)
contains the low section.
The following Table 9 lists the electrical parameters.
￫
Some Modbus drivers decrement the register number
automatically according to the original convention of the
Modbus system.
This is also the case with drivers of XC controllers.
In other words, the register number of the desired parameter in
the application must be incremented by 1 in the query.
Example:
If, for example, L1 current is to be polled, register addresses 3
(= 2 + 1) (high) and 4 ( = 3 + 1) (low) must be polled.
