Chapter 14 Remote  I/O Communication Module  AHRTU-PFBS 
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The  above explanation is  based on the connection between master and AHRTU-PFBS-5A. The 
mapping relationships between D registers in the master PLC and the configured modules of the 
slave are related with the master parameters settings. For more details on setting, please refer to 
section 10.3.2 in the SYCON.net help. 
 
The starting addresses of the INPUT and OUTPUT areas that AH PLC assigns to the master 
module are D1000 and D6000 respectively as the two figures show above.