6F8C0845
53
4.2 S Controller Interface Buffer Memory Configuration
4
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.
Figure 4-6 DN611 S controller interface buffer memory
(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.
0000H
0106H
Input/output data area
263 words
0107H
02CEH
RAS information area
456 words
02CFH
03FFH
Semaphore area
305 words
