Yaskawa MP920 Communications Module - Manual (Page 91)

5 215IF Module
5.6.2 Relay Processing Flow
5-30
5.6.2 Relay Processing Flow
When, for example, a message is sent from ST#01 to ST#64, the relay destination address is
automatically allocated by the system, and the message is sent to ST#64 via the relay station.
With the MEMOBUS protocol, a response message is sent from ST#64 to ST#01 via the
relay station.
5.6.3 Example of a Network Configuration Using the Relay Function
The Network Relay Function basically consists of a MPE720 Programming Device that is
connected to a single station and is used to perform engineering, plus a system configuration
to relay data over 215IF lines.
„ Transmission Definition Parameters
The following transmission definition parameters are used for the Relay Function.
Message Relay Function
This parameter specifies whether or not the Message Relay Function is to be used.
• Yes: The Message Relay Function can be used.
• No: The Message Relay Function cannot be used.
No. of Relayed Network 1 (Relay Destination Networks 1)
This parameter is valid for the Message Relay Function, and specifies the relay destination
networks for messages.
The numbers of the networks to relay messages from the 215IF line are specified here. The
numbers of all networks connected to this local line should normally be specified.
ST#01 ST#10 ST#15 ST#64
CP-215 CP-215
NW#01
Relay station
NW#02