2 baud rate, Baud rate -17 – Yokogawa PR300 Power and Energy Meter User Manual

Page 40

<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]