Yokogawa PR300 Power and Energy Meter - Manual (Page 96)

6-2
<Toc> <Ind> < 6. Modbus/TCP Communication Protocol>
IM 77C01E01-10E
HUB
PR300 as
Ethernet-serial
gateway function
RS-485 connection
Station number 02
(arbitrary)
Station number 03
(arbitrary)
(Example)
LAN
connection
Station number 01 (fixed)
IP address [192.168.1.2]
(arbitrary)
Station number 01 (fixed)
IP address [192.168.1.3]
(arbitrary)
Station number 01 (fixed)
IP address [192.168.1.4]
(arbitrary)
Station number 01 (fixed)
IP address [192.168.1.5]
(arbitrary)
Maximum distance between hub and module: 100 m
Maximum number of hubs connectable in cascade configuration:
4 levels for 10BASE-T
2 levels for 100BASE-TX
Higher-level device
IP address [192.168.1.1]
(arbitrary)
Figure 6.2 Example of Connection for Modbus/TCP Communication
See Also
Chapter 7 for information on the D registers.