Yokogawa PR300 Power and Energy Meter - Manual (Page 20)

<Toc> <Ind> <2. Setup>
2-11
IM 77C01E01-10E
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Setting for PR300 to perform the Ethernet-serial gateway function
To use the Ethernet-serial gateway function, set the parameters of subsection 2.2.2, “Con-
ditions for Ethernet Communication” and set a parity (PRI) in Table 2.3.
When the protocol is set to Modbus/TCP, the parameters of RS-485 other than the parity
are fixed and unchangeable.
Table 2.3 Parameters of PR300 to Perform the Ethernet-Serial Gateway Function
(ST-NO)
(RS-485
communication)
(B-RT)
(PRI)
(STP)
(DLN)
01 (fixed)
9600
NONE
1
8
1 (fixed)
8 (fixed)
01
9600 bps (fixed)
NONE
EVEN
ODD
Parameter Name Parameter Symbol Menu Setting Range
Initial
Value
Baud rate
Data length
Station number
None
Even
Odd
Parity
Stop bit
●
Slave PR300
The station number of any slave PR300 (device for RS-485 communication) must be a
different number other than 01.
The communication conditions for any slave PR300 (device for RS-485 communication)
other than the station number must conform to those in Table 2.3.
Table 2.4 Parameters of Slave PR300
(ST-NO)
(RS-485
communication)
(B-RT)
(PRI)
(STP)
(DLN)
2400 bps
9600 bps
19200 bps
1
2
7
8
NONE
EVEN
ODD
02 to 99
9600
NONE
1
8
01
Parameter Name Parameter Symbol Menu Setting Range
Initial
Value
Baud rate
Data length
Station number
None
Even
Odd
Parity
Stop bit
When using the VJET Ethernet/RS-485 converter as an Ethernet-serial gateway function,
the communication conditions of any slave PR300 must conform to those of the VJET at a
higher level. The initial value of the VJET parity is EVEN.