Yokogawa PR300 Power and Energy Meter - Manual (Page 31)

3-8
<Toc> <Ind> <3. Procedures for Setting PR300 Functions>
IM 77C01E01-10E
3.3 Setting Analog Output
3.3.1 Selection of Measurement Item for Analog Output
[Procedure]
(1) Write a measurement item for analog output value to the D register in the table below.
The data type is integer.
(2) After writing that value, write 1 to the analog output writing status register, D0217.
D Register
D0212
D0217
Reference No.
40212
40217
H No.
00D3
00D8
Description
Measurement item for
analog output
Analog output writing status
(D0212 to D0216 are
validated)
Effective Range
0: Active power
1: Reactive power
2: Apparent power
3: Voltage-1
4: Voltage-2
5: Voltage-3
6: Current-1
7: Current-2
8: Current-3
9: Power factor
10: Frequency
If other than 1: Invalid
If 1: Writing is executed
Initial value of measurement item for analog output: 0 (active power)
[Example]
To set the measurement item for analog output to 3 (voltage-1):
For station number 01, use PC link communication (without checksum) and the random
write command as shown below:
[Command]
[STX] 01010WRW02D0212, 0003, D0217, 0001 [ETX] [CR]
[Response]
[STX] 0101OK [ETX] [CR]
NOTE
• A measurement item for analog output value can be set for the PR300 with analog
output.
• Different types of the PR300 can measure different items, and so the values that can
be set to the D register differ depending on the PR300 type. If a value that cannot be
written to the D register is written, it will be invalid. The table below shows the values
that cannot be set for four types of the PR300:
Phase and Wire System
Single-phase two-wire
Single-phase three-wire
Three-phase three-wire
Three-phase four-wire (2.5 element)
Values that cannot be Set
4: Voltage-2, 5: Voltage-3, 7: Current-2, and 8: Current-3
5: Voltage-3 and 8: Current-3
4: Voltage-2 and 7: Current-2
4: Voltage-2 and 7: Current-2
• When the PR300 is the three-phase four-wire system (2.5 element), the following
measurement items can be measured only when the current is in a state of equilib-
rium: “1: Reactive power”, “2: Apparent power”, “6: Current-1”, “8: Current-3” and “9:
Power factor.”