GOTESF
Member
I'm using an ET200S with IM151-7 cpu as a standalone controller. I also have 8-point DIs and DOs. The IO modules are physically labeled like this (looking straight at them):
1 5
2 6
3 7
4 8
Each module correlates to a TB (points 1-8). When I do a point-to-point check, TB1-1 correlates to Input card 1 point 1, etc. as expected, across the board.
HOWEVER, when I monitor the plc in Step7, I realize that the IO is mapped incorrectly to the symbol list!! For example, IO Point indicators 1-4 on the actual module correlate to software points 1,3,5,7. And IO point indicators 5-8 correlate to software points 2,4,6,8.
WHAT'S GOING ON?!?! The hardware configuration seems to be correct, and you input the modules using the part number for crying out loud. The symbol table, you populate symbolically, and the mapping of points is done by the software. Why is this happening?
ANY HELP?!?
1 5
2 6
3 7
4 8
Each module correlates to a TB (points 1-8). When I do a point-to-point check, TB1-1 correlates to Input card 1 point 1, etc. as expected, across the board.
HOWEVER, when I monitor the plc in Step7, I realize that the IO is mapped incorrectly to the symbol list!! For example, IO Point indicators 1-4 on the actual module correlate to software points 1,3,5,7. And IO point indicators 5-8 correlate to software points 2,4,6,8.
WHAT'S GOING ON?!?! The hardware configuration seems to be correct, and you input the modules using the part number for crying out loud. The symbol table, you populate symbolically, and the mapping of points is done by the software. Why is this happening?
ANY HELP?!?