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= Key 1
= Key 2
= Key 3
= Maximum or consumption = Minimum or supply
Example: Measured values in foating point format
The UMG 503 and the PLC are suited for "higher proto-
col". A current transformer of 200A/5A and a voltage
transformer of 400V/400V have been set.
Real energy consumption and reactive power inductive
should be transmitted in floating point format and volta-
ge in L1, L2 and L3 against earth in integer format.
Read scale
The scale of the measured values depends on the set
current and voltage transformer ratios only und must
only be read after changing those ratios.
The scale for voltage measured values can be found in
table 8.
Scale
Address
Voltage
9101
Within the PLC, the output range must be overwritten
with control word 4 for the scales of voltage and with
control word (3) for the request number.
Control word 1 = In- and outputs "
0000
" (Example)
Control word 2 = In- and outputs "
0000
" (Example)
Control word 4 = Scale "
9101
" (Voltage)
Control word 3 = Request number "
3
" (Example)
Control words 5..32 free
After that, the following scales are available for voltage
in the input range of PLC:
Control word
Measured value
Contents
1
Request number
3
2
Scale, voltage0 (*1)
3..28
not defined
Read measured values
The measured values in floating point format can be
found in table 1. The following addresses can be read in
table 1:
Measured value
Address
Contents (Example)
Voltage L1-N
1012
230
(V)
Voltage L2-N
1017
225
(V)
Voltage L3-N
1014
235
(V)
Real energy cons.
2000
60444
(Wh)
React. energy ind.
2020
23501
(varh)
In the PLC the output range must be overwritten with the
control words (4-7) for the measured value addresses
and afterwards with control word (3) for the request
number.
Control word 1
= In- and outputs "
0000
" (Example)
Control word 2
= In- and outputs "
0000
" (Example)
Control word 4
= Measured value address "
1012
"
(Voltage L1-N)
Control word 5
= Measured value address "
1013
"
(Voltage L2-N)
Control word 6
= Measured value address "
1014
"
(Voltage L3-N)
Control word 7
= Measured value address "
2000
"
(Real energy, consumption)
Control word 8..10 = free
Control word 11
= Measured value address"
2020
"
(Reactive energy ind.)
Control word 12..14 = free
Control word 3
= request number "
4
" (Example)
Control words 15..32 = free
After that the following measured values are available in
the input range of the PLC:
Control word Measured value
Contents (Example)
1
Request number
4
2
Voltage L1-N
230
(V)
3
Voltage L2-N
225
(V)
4
Voltage L3-N
235
(V)
5..8
Real energy cons. 604,44(Wh)
9..12
Reac. energy ind. 235,01(varh)
13..28
not defined
The voltages each are transmitted in one word (2 Byte)
and real and reactive energy each in 4 words (8Byte).
Therefore real and reactive energy need 4 control words
each and the measured value of reactive energy is depo-
sited from control word 9.
