4 Configuring the device
4.2 MODBUS register
NZM-XMC Measuring and Communication Module
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4.2.5 Specifying the frequency measurement and pulse outputs for energy values
These variables allow to perform some general settings.
•
Register 1101L sets from which cable will the device measure the
frequency (register 40h).
•
Registers 1103 and 1104 define the pulse output rate.
The specified value is the energy required for each pulse, in Wh.
For example, a value of 100 in register 1103 will cause a pulse to always
be produced as soon as 100 Wh are consumed.
•
Register 1105 sets the pulse width in steps of 10 milliseconds.
•
A value of 1 pulse/kWh is set as the default value.
Register value
1 pulse per
1000
1 kWh
100
100 Wh
10
10 Wh
1
1 Wh
Register
Variable
Value range
1101L
1)
Frequency measurement
0: Cable L1
1: Cable L2
2: Cable L3
1101H
2)
Not used
–
1103
Pulse rate for active energy [Wh × pulse]
0 (deactivated)
1 - 9999
1104
Pulse rate for reactive energy [Wh × pulse]
0 (deactivated)
1 - 9999
1105
Pulse width [in ten-millisecond steps]
–
1) L = Low byte
2) H = High byte