YOKOGAWA UPM100, User Manual

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IM 77C01H01-10EN
Procedures for Setting UPM100/UPM101 Functions
3
3.4 Other Settings
3.4.5 Apparent Energy Writing
[Procedure]
1. Write an apparent energy value to the two D registers in the table below. The data type
is integer.
2. After writing that value, write “1” to the write status register, D0098.
D Register Reference No. H No. Description Effective Range
D0095 40095 005E
Set apparent energy value
(lower 2 bytes)
Refer to the “Note” below.
D0096 40096 005F
Set apparent energy value
(upper 2 bytes)
D0098 40098 0061
Set apparent energy value
write status
If other than 1: Invalid
If 1: Writing is executed
[Example]
To set the apparent energy value to 12345:
For station number 01, use PC link communication (without checksum) and the random write
command as shown below:
If 12345 is converted into a hexadecimal value, the value is 0000 3039. Then the order of
the upper two bytes and the lower two bytes is reversed → 3039 0000.
[Command]
[STX] 01010WRW03D0095, 3039, D0096, 0000, D0098, 0001 [ETX] [CR]
[Response]
[STX] 0101OK [ETX] [CR]
Note
The set apparent energy value range of the UPM100 with the integral resolution (kWh) option
changes depending on the values of the VT and CT ratios. The table below shows the set value
range.
[Secondary Rated Power] x [VT Ratio] x [CT Ratio] Possible Set Value Range
Below 1 MVA 0 to 999999 kVAh
1 MVA to 10 MVA 0.00 to 9999.999 MVAh
10 MVA or above 0.0 to 99999.999 MVAh
Regardless of the value of [Secondary rated power] x [VT ratio] x [CT ratio], the set
apparent energy value range of the UPM100 with the integral resolution (Wh) option can be
set within the range below:
Possible set value range: 0 to 99999999 VAh
Note
The secondary rated power of the UPM100 changes depending on its model and suffix codes.