SLC500 Math Register

Hi,

Does anyone here have any ideas why the S:13 bit would continually increment by 1 every second? It continues up to sixty, increments S:14 by 1 then starts over at zero. I can't see anything in the program doing this, I have 10 machines running basically the same program and only 1 is doing this.

Never Mind, I figured it out, Someone had divided the ACC value of timer. I moved the value to a floating point and then did the division and that fixed it.

Joe

You might want to carefully check the application again.

When you do integer division the math register holds the quotient and the remainder. Computing minutes and seconds would be a very good example of something where you want to know the quotient and the remainder. 120 seconds = two minutes and ten seconds. The quotient is 2 and the remainder is 10. If you needed 2:10 instead of 2.1667 then you might not want to change to using a floating point calculation.

Thats up to you to determine for your application of course, I'm just pointing out one possible reason it was originally done that way.