Data in the Modbus registers
1-8
SIPROTEC Modbus - Bus mapping 7UM62
C53000-L1840-C009-03
1.3.3 Metered measurands / Counters
Scaling The scaling of the metered measurands, which are derived from measured values,
refers to:
60000 impulses per hour for S = S
nom
S
nom
= Rated Apparent Power of the Generator (parameter address = 0252)
Example In the parameter set is configured:
S
nom
= 5.27 MVA
60000 impulses correspond so that:
1 h * 5.27 MVA = 5.27 MVAh
References Standard mapping 3-1: ref. to chap. 2.4.4
Standard mapping 3-2: ref. to chap. 3.4.4
Note:
• The type of the update (cyclic, with or without deletion) and the update interval must
be programmed for the metered measurands with the parameterization software
DIGSI.
• The scaling of the metered measurands at binary inputs (pulse counters) depends
on the externally connected pulse generator.
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