Ramp Soak ramp slope counts per second

[rlawson]

I have a heat treating process where I want to use the ramp soak generator with a 260 cpu system. The problem that I have is the ramping counts per second function. For example I need to ramp at a rate of 100 deg F per hour. With the ramp slope variable I am limited from 00.00 to 99.99 counts per second. 100 deg per hour equates to .0277. .01 gives me 36 deg F per hour, .02 gives 72 deg/hr, and .03 gives 108. Since I need to maintain 100 degrees instead of 72 or 108, what are my options? Is this beyone the capabitity of the built in ramp soak generator?
Tks, Robert

[MikeS]

That's all you have to work with in these PLCs.

You'll have to roll your own ramp/soak table in your ladder code to get the steps you need.

[rlawson]

Thats what I figured, thanks for confirming what I suspected.

Robert

[BobO]

Sound like a good feature for a future PLC...ramp/soak generator with selectable time base...