Smart S7-200 PLC channel free mapping function block (do_map)

Sometimes we want the output point of the device to be freely mapped , Convenient for field modification , XOR is the wrong field wiring , We don't want to change the program , Just modify the parameters to change the channel number , This blog post gives the algorithm for everyone to learn . Limited to my ability and level , Mistakes and deficiencies are inevitable in the text , Sincerely welcome your criticism and correction , At the same time, thank you for your attention and subscription .

1、 Output channel free mapping

3、 Output channel free mapping

 3、 mapping DO_Map_byte

4、STL Code

SUBROUTINE_BLOCK DO_Map_byte:SBR1
TITLE= Output address mapping 
VAR_INPUT
byAddress:WORD;	//  Output offset address 
bRun:BOOL;	//  Input 
END_VAR
VAR_IN_OUT
byDout:BYTE;
END_VAR
BEGIN
Network 1 
LDW=   LW0, 0
LPS
A      L2.0
ORB    1, LB3
LPP
AN     L2.0
ANDB   16#FE, LB3
Network 2 
LDW=   LW0, 1
LPS
A      L2.0
ORB    2, LB3
LPP
AN     L2.0
ANDB