Semaphore Area - Toshiba 2000 V Series Manual

Chapter 4 Operating Procedures for the DN611 (Software)
4.2.4

Semaphore area

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This area is used to issue requests from the S controller for operating the DN611 in a
specific way, or for reading the DN611's response to a request. The addresses shown in
Figure 4-14 are the word addresses as viewed from the S controller.
02CFH
02D0H
0334H
03FCH
03FDH
03FEH
03FFH
Figure 4-14 Semaphore Area Configuration
(1) Request register (03FFH: 1 word): S controller → → → → DN611
This register is used to notify the DN611 of a request, if issued by the S controller.
After writing "1" in the request flag register, the S controller ladder program writes
"256(0100H)" in this register.
0: No notice.
256: Notice
After reading a request in the request area, the DN611 sets this register to "0."
(2) Request flag register (03FDH: 1 word): S controller → → → → DN611
This register is used to issue a request from the S controller to the DN611.
writing request data in the request area, the S controller ladder
program writes "1" in this register.
0: No request.
1: A request is issued from the S controller to the DN611
Other than 0 and 1: Reserved
The DN611 sets this register to "0" after reading a request in the request area.
(3) Acknowledgement flag register (03FCH: 1 word): DN611 → → → → S controller
This register is used to notify the S controller of the DN611's response after the S
controller issues a request to the DN611.
Reserved (1 words)
Acknowledgement area (100 words)
Request area (200 words)
Acknowledgement flag register (1 word)
Request flag register (1 word)
Reserved (1 words)
Request register (1 word)
model 2000 DeviceNet Module Manual (DN611/DN611A)
After