Yokogawa PR300 Power and Energy Meter - Manual (Page 28)

Parameter Setting Operations
3-7 IM 77C01E01-01E
1
2
3
4
5
A
I
3.4 Setting RS-485 Communication Conditions
NOTE
● The Modbus/TCP protocol can only be selected for a PR300 with the Ethernet communication
function.
● If the protocol is set to Modbus/TCP, the station number, baud rate, stop bit, and data length
setpoints are fixed as shown below.
Station number = 01, Baud rate = 9600 bps, Stop bit = 1 bit, Data length = 8 bits
Parameter Setting Types and Ranges
PC link without checksum
PC link with checksum
Modbus/ASCII
Modbus/RTU
Modbus/TCP (*1)
PR201 original
2400 bps
9600 bps
19200 bps
NONE
EVEN
ODD
1 bit
2 bits
8 bits
7 bits
Menu to shift to the parameters of RS-
485 communication
1
9600 bps
1
8
*1 Modbus/TCP can be selected for a PR300 with the Ethernet communication function only.
*2 When Modbus/RTU is selected for the protocol, select 8 for the data length.
*3 When PR201 original is selected for the protocol, select NONE for the parity, 1 for the stop bit and 8 for the data
length.
Parameter Symbol Parameter Name
Setting
Type
Setting Range (Details)
Initial Value
(Factory-set
Value)
RS-485 communication menu
Station number 1 to 99
Protocol
Baud rate
Parity (*3)
Stop bit (*3)
Data length (*2)(*3)
Integral
numeric
value
Selection
Selection
Selection
PC link
with
checksum
NONE
Selection
Selection