Yokogawa PR300 Power and Energy Meter - Manual (Page 40)

<Toc> <Ind> <3. Procedures for Setting PR300 Functions>
3-17
IM 77C01E01-10E
3.5.2 Baud Rate
[Procedure]
(1) Write a baud rate value to the D register in the table below. The data type is integer.
(2) After writing that value, write 1 to the RS-485 writing status register, D0277.
D Register
D0272
D0277
Reference No.
40272
40277
H No.
010F
0114
Description
Baud rate
RS-485 writing status
(D0271 to D0276 are
validated)
Effective Range
0: 2400 bps
1: 9600 bps
2: 19200 bps
If other than 1: Invalid
If 1: Writing is executed
Initial value of baud rate: 1 (9600 bps)
NOTE
When Modbus/TCP is selected for the protocol, the baud rate is fixed and unchangeable at
9600 bps.
[Example]
To set the baud rate to 2 (19200 bps):
For station number 01, use PC link communication (without checksum) and the random
write command as shown below:
[Command]
[STX]01010WRW02D0272,0002,D0277,0001[ETX][CR]
[Response]
[STX]0101OK[ETX][CR]