Yaskawa MP920 Communications Module - Manual (Page 90)

5.6 Relay Function
5-29
5
5.6 Relay Function
This section explains the Relay Function between the network segments of 215IF Modules. The
Relay Function is used to transfer messages between Machine Controllers across multiple 215IF
networks.
5.6.1 Relays Between Networks
A unique network number (NW#nn) is allocated to each network segment in the system. A
unique station number (ST#nn) is also allocated to the 215IF Module in each network seg-
ment.
All the units connected to the entire network can be uniquely identified by identifying the
combinations of these network numbers and station numbers as network addresses.
The Relay Function facilitates message communications between such networks.
To use the Relay Function effectively, the relay destination network number must be speci-
fied in the 215IF parameter settings. See the transmission definitions for details.
ST#1 ST#2
ST#3 ST#4
Relay
Relay
ST#5
ST#2 ST#3
ST#4
ST#2
ST#2
ST#1
ST#3
ST#6 ST#1
NT#1
CP-215
NT#2
CP-215
NT#3
CP-215
ST#5
ST#1
CP-215
NT#4
Relay
Relay