Yokogawa PR300 Power and Energy Meter - Manual (Page 37)

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<Toc> <Ind> <3. Procedures for Setting PR300 Functions>
IM 77C01E01-10E
3.4.5 Demand Current Alarm Point
[Procedure]
(1) Write a demand current alarm point value to the two D registers in the table below.
The data type is 4-byte floating point.
(2) After writing that value, write 1 to the demand measurement writing status register,
D0226.
D Register
D0223
D0226
Reference No.
40223
40226
H No.
00DE
00E1
Description
Demand current alarm point
(float, lower 2 bytes)
Demand measurement writing
status (D0218 to D0225 are
validated)
Effective Range
1 to 1000
Unit: A
D0224 40224 00DF
Demand current alarm point
(float, upper 2 bytes)
If other than 1: Invalid
If 1: Writing is executed
Initial value of demand current alarm point: 100 A
[Example]
To set the demand current alarm point to 10.0 A:
For station number 01, use PC link communication (without checksum) and the random
write command as shown below:
If 10.0 is converted into a 4-byte floating point value, the value is 4120 0000.
[Command]
[STX]01010WRW03D0223,0000,D0224,4120,D0226,0001[ETX][CR]
[Response]
[STX]0101OK[ETX][CR]
NOTE
A demand current alarm point value can be set for the PR300 with demand measuring
function.