Yokogawa PR300 Power and Energy Meter - Manual (Page 42)

<Toc> <Ind> <3. Procedures for Setting PR300 Functions>
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IM 77C01E01-10E
3.5.4 Stop Bit
[Procedure]
(1) To set the stop bit, write data 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
D0274
D0277
Reference No.
40274
40277
H No.
0111
0114
Description
Stop bit
RS-485 writing status
(D0271 to D0276 are
validated)
Effective Range
1: 1 bit
2: 2 bits
If other than 1: Invalid
If 1: Writing is executed
Initial value of stop bit: 1 (1 bit)
NOTE
When Modbus/TCP is selected for the protocol, the stop bit is fixed and unchangeable at 1
bit.
[Example]
To set the stop bit to 2 (2 bits):
For station number 01, use PC link communication (without checksum) and the random
write command as shown below:
[Command]
[STX]01010WRW02D0274,0002,D0277,0001[ETX][CR]
[Response]
[STX]0101OK[ETX][CR]