I am having a bit of trouble getting my head around this. I am using Step 7. I want to set a memory bit [Alarm_Active] when a random bit in a word [MW700]goes high. Below I have two rungs. The first is the simple way. The way I want to do this is to do a compare of a word [MW700] and if it is anything other than 0 set a Bit. I have done this in AB ladder with a Bitwise OR. The second network is how I think it will work in Step7. After reading the help files I am a bit uncertain that I am correct. I think I need to use the status bit for the instruction, but I am unsure on the actual construction of the rung. Or is there a better way to do the same thing A push in the right direction would be appreciated.
Thanks Bob
Thanks Bob