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model 3000 PROFIBUS Module User’s Manual
Chapter 9 Appendix
9
9.3  Controller Interface DPRAM Memory Map
(1) PF311 memory map
The address is the offset address (word address) from the beginning of the PF311 
interface memory. 
 
(2) PF312 memory map
The address is the offset address (word address) from the beginning of the PF312 
interface memory. 
Table 9-4  Controller interface DPRAM memory map
Address Name Function
000h-0FFh PF module information
(256 words)
PF module status, control information 
100h-1FFh Write data
(256 words)
Output area to transmission module
200h-2FFh Read data
(256 words)
Input area from transmission module
300h-47Fh Reserved Do not use
480h-50Fh Request text area
(288 bytes)
Storage area for request text passed from controller to 
transmission module
510h-58Fh Unused Do not use
590h-61Fh Response text area
288 bytes
Storage area for response text passed from controller 
to transmission module
620h-69Fh Unused Do not use
6A0h-6FFh Reserved Do not use
700h-7C7h DP system information
(400 bytes)
Transmission module DPRAM system information
7C8h-7CDh DP firmware information
(12 bytes)
Transmission module DPRAM firmware information
7CEh-7EFh Reserved Do not use
7F0h-7FFh Semaphore area
(32 bytes)
Semaphore for exchanging data between controller 
and PF311
Table 9-5  PF312 controller interface DPRAM memory map
Address Name Function
000h-0FFh PF module information 
(256 words)
PF module status, control information 
100h-179h Write data 
(122 words)
Output area to transmission module
17Ah-1FFh Unused Do not use
200h-279h Read data 
(122 words)
Input area from transmission module
27Ah-7FFh Unused Do not use