Toshiba 2000 V Series Manual page 75

Shown below is the configuration of the S controller interface buffer memory as viewed
from the S controller. The addresses of the communication memory are word addresses.
(1) Semaphore Area
This area is used to issue requests from the S controller to operate the DN611 or to
read DN611 responses.
(2) RAS information Area
The DN611 displays module status and communication status with the network and
slave devices in this area.
(3) Input/Output Data Area
This area stores data exchanged between the DN611 and slave devices.
Output data from the S controller is written in this area, while input data is read from
this area. This area has output and input semaphore registers for synchronous
communication between the DN611 and slave devices.
6F8C0845
0000H
Input/output data area
0106H
0107H
RAS information area
02CEH
02CFH
Semaphore area
03FFH
Figure 4-6 DN611 S controller interface buffer memory
4.2 S Controller Interface Buffer Memory Configuration
263 words
456 words
305 words
4
53