Registers 40201 To 40208: Metered Measurands - Siemens SIPROTEC 7SJ80 Manual

Modbus Register Map Organization
1.6.4

Registers 40201 to 40208: Metered measurands

Scaling
Example
Designation of the
Register
SIPROTEC objects
40201
- Wp(puls) =
40202
40203
- Wq(puls) =
40204
40205
- WpForward =
40206
40207
- WqForward =
40208
40209
- WpReverse =
40210
40211
- WqReverse =
40212
32
• Registers are write-protected.
The scaling of the metered measurands, which are derived from measured values,
refers to:
60000 impulses per hour for V = V
V = Full Scale Voltage (parameter address 1101)
nom
I = Full Scale Current (parameter address 1102)
nom
In the parameter set is configured:
I = 100 A and V
nom nom
60000 impulses correspond so that:
1 h * 100 A * 12 kV * √3 = 2078.46 kWh
Note:
• The type of update (cyclic, with or without deletion) and the update interval must be
programmed for the metered measurands using the parameterization software
DIGSI.
• The scaling of the metered measurands at binary inputs (pulse counters) depends
on the externally connected pulse generator.
Pulsed Energy Wp (active)
(metering impulses at binary input)
Pulsed Energy Wq (reactive)
(metering impulses at binary input)
Wp Forward
(metered measurand derived from measured
values)
Wq Forward
(metered measurand derived from measured
values)
Wp Reverse
(metered measurand derived from measured
values)
Wq Reverse
(metered measurand derived from measured
values)
1. A write access is rejected with exception code 03 (ILLEGAL_DATA_VALUE).
1
and I = I
nom
= 12 kV,
Comment
SIPROTEC Modbus - Bus mapping 7SJ80/7SK80/7RW80
nom
Scaling
31
(2 -1 corresponds
to ...)
31
2 -1 impulses
31
2 -1 impulses
31
2 -1 impulses
31
2 -1 impulses
31
2 -1 impulses
31
2 -1 impulses
C53000-L2240-A320-3
Internal
object
no.
888
889
924
925
928
929