Word issue

[CoolBreeze 0]

I am having trouble try to access the individual bits in word D101. What I want to do is move a 1 into D101.1 and then when I recieve an index signal I want to transfer the 1 to D101.2, and so forth all the way up to bit 12 or D101.C. Then on I need to a way to say if D101.4 is equal to 1, start cycle. I can figure out how to move a 1 into D101.1, but I can't get the equal statement.

[CoolBreeze 0]

I think i figured it out, I need to put a 1 into D101, and then move D101 into an empty 16 bit M word. then I can monitor the M bits.

[Crossbow 295]

You can do that, or you can use bit shift commands. Of course you neglected to mention which PLC, so we can't tell you the exact commands to use. That and you don't need compares. Write ladder logic... SET D101.1, LD D101.C, etc.