Chapter 12 Network Module AH10PFBM As the two interfaces above show, the starting addresses of the INPUT and OUTPUT areas that AH PLC assigns to the master module are D1000 and D6000 respectively. On the above interface, the input offset address for 4 word input is 0 and the corresponding starting number of D registers in the master PLC is 1000 （ 1000=1000+0/2 ） . The input offset address for 2 word input is 8 and the corresponding starting number of D registers in the master PLC is 1004 （ 1004=1000+8/2 ） .
The output offset address for 4 word output is 0 and the corresponding starting number of D registers in the master PLC is 6000 （ 6000=6000+0/2 ） ; the output offset address for 2 word output is 8 and the corresponding starting number of D registers in the master PLC is 6004 （ 6004=6000+8/2 ） . I/O mapping relations between master PLC and slave PLC Note: The PROFIBUS DP data are transmitted in cycle. 12-49 Register in master PLC Register in slave PLC D6000 D300 D6001 D301 D6002 D302 D6003 D303 D6004 D600 D6005 D601 Register in master PLC Register in slave PLC D1000 D200 D1001 D201 D1002 D202 D1003 D203 D1004 D500 D1005 D501