Toshiba V Series User Manual page 22

Chapter 1 Overview
1
Features of the FL654
(1) FL-net compliant
(2) High-speed cyclic transmission
(3) Remote I/O station for the integrated controller model 2000 I/O modules
Operation Overview
2
The FL654 is a product complying with FL-net of the Japan Electrical Manufacturers'
Association (JEMA). It can be connected to Toshiba FL-net products. Moreover, the
FL654 intends to obtain JEMA certification; it can also be connected to other
manufacturers' products.
The FL654 achieves a transmission performance of 50 ms/32 units / 2K words, i.e.,
the target performance of FL-net, enabling high-speed I/O data communications.
The FL654 enables the integrated controller model 2000 I/O modules to be connected
to the FL-net system without a controller. Because it requires no controller, eliminating
the need for using programs, engineering costs are reduced.
Note: There are limitations on the types of connectable I/O modules.
The FL654 takes up one continuous talker area and one continuous listener area in
"Area 1" or "Area 2" of the FL-net cyclic transmission common memory. The talker and
listener areas are independent of one another. The FL654 cyclically outputs input
module data to the talker area and listener area data to the output modules.
The figure below shows an example of assigning both the talker and listener areas to
Area 2.
I/O m odules
Input m odule
Input m odule
・ ・ ・ ・ ・ ・ ・
Input m odule
O utput m odule
O utput m odule
・ ・ ・ ・ ・ ・ ・
O utput m odule
Figure 1-2 Concept of I/O Operations
FL-net com m on
FL654
Talker area
Listener area
Model 2000 FL-net (OPCN-2) Remote I/O Station Module (FL654) User's Manual
m em ory
Area 1
Area 2