
B-63434EN/02 DESCRIPTION 3.MESSAGE TRANSMISSION
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3.2 Procedure of the Message Transmission Function
The function for transmitting messages other than transparent
messages involves a client function and server function. For a
message transmitted from the client, the server returns a response
message. In short, the client is a service requester, and the server is
a service receiver.
With the server function for each type of message transmission of the
FANUC FL-net function, a response message is automatically
returned to the client without involving the user program in response
to a received message. With the client function, the user program
transmits a message by using the interface area set by Pa50 (interface
allocation address).
Client Server
User program User program
System System
FL-net
A transparent message can be handled freely by the user program
without making a client/server distinction. So, two interface areas
are required: one for transmission and the other for reception. As
the transmit interface area, the interface area set by Pa50 (interface
allocation address) used with a client message is used. As the
receive interface area, the interface area set by Pa52 (transparent
receive message allocation address) is used.
User program User program
System System
FL-net
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