
B-63434EN/02 DESCRIPTION 1.FL-net SPECIFICATIONS
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1.2 FANUC FL-net Functions
Cyclic transmission
With the FANUC FL-net, part of large-capacity common memory can
be allocated in the PMC R area or D area to allow the user program to
read and write data in the FL-net common memory.
The FL-net common memory contains two areas: an 8K-bit (= 0.5K-
word) area called area 1 and an 8K-word area called area 2.
Generally, common memory area 1 is used for treating bit data and
common memory area 2 is used for treating numeric data.
For how the PMC memory area corresponds to each common memory
area and how to allocate common memory areas, see Sections 2.1,
"Common Memory Area 1 Cyclic Transmission," and 2.2, "Common
Memory Area 2 Cyclic Transmission," in "Description."
Message transmission
The message transmission function is the other FL-net function.
With this function, the user program also executes message
transmission services via PMC memory areas.
To perform message transmission, the user program writes the
transmission request code of message transmission in the PMC
memory area that has been set as an message transmission interface in
advance. The user program also reads received message data via a
PMC memory area. Part of message transmission server (request
receiver) processing may be performed in the FL-net board without
user-program intervention.