Setting Up The Talker And Listener Areas - Toshiba FL654A User Manual

Chapter 6 Talker and Listener Areas

6.1 Setting up the Talker and Listener Areas

The FL654A's talker and listener areas are provided in Area 1 or Area 2 of the FL-net cyclic
transmission common memory. Setup of the talker and listener areas is achieved using the talker
block head/listener block head setting switches at the lower left side face of the module.
(1) Dividing the common memory area into blocks
To simplify the FL654A switch settings, the head addresses of the talker and listener areas are
set as follows:
(a) For common memory Area 1
The head addresses are set using block numbers of blocks divided in 2 words.
(b) For common memory Area 2
The head addresses are set using block numbers of blocks divided in 32 words.
6
FL-net cyclic common
memory
34
6F8C1625
Area 1
512 words
Area 2
8k words
Common memory
Area 2 addresses
(Word addresses)
Figure 6-1 Dividing the Common Memory Area into Blocks
Common memory
Area 1 addresses
(Word addresses)
Block 0
2 words
Block 1
2 words
Block FFh
2 words
0h
Block 0
32 words
20h
Block 1
32 words
1FE0h
Block FFh
32 words
0h
2h
1FEh