Yokogawa PR300 Power and Energy Meter - Manual (Page 15)

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<Toc> <Ind> <2. Setup>
IM 77C01E01-10E
2.2 Setting Communication Conditions
This section describes the setting parameters for using the communication func-
tions, and the setting ranges. For details of setting method, refer to the PR300
Power and Energy Meter User’s Manual (electronic manual).
2.2.1 Conditions for RS-485 Communication
This subsection describes the setting parameters for using the RS-485 communication
function, and the setting ranges.
Table 2.1 Parameters to be Set for Communication Functions
Parameter Name
Protocol
(COMM)
(ST-NO)
(RS-485
communication)
(B-RT)
(PRI)
(STP)
(DLN)
PC link without checksum
2400 bps
9600 bps
19200 bps
1
2
7
8
(NONE)
(EVEN)
(ODD)
(PCLK1)
(PCLK2)
(M ASC)
(M RTU)
(M TCP)
(PR201)
Parameter Symbol Menu Setting Range
Initial
Value
Baud rate
Parity* 3
Stop bit* 3
Data length* 2 * 3
Station number
9600
NONE
1
8
01
PCLK2
PC link with checksum
Modbus/ASCII
Modbus/RTU
Modbus/TCP* 1
PR201 original
01 to 99 (01 to 31 recommended)
None
Even
Odd
*1: Modbus/TCP can be selected for the PR300 with Ethernet communication function only.
*2: When Modbus /RTU is selected for the protocol, select 8 for the data length. If 7 is selected for the data length,
communication is not possible.
*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.