Analog input/output ideas for SLC 500

[Ron Beaufort]

http://www.plctalk.net/qanda/showthread.php?p=14314&postcount=3

this should get you going ... when you calculate the needed resistance, don't forget that the input module will add 250 ohms to the circuit ... if you've got a 24VDC power supply, you can skip the batteries ... and the SLC-500 power supply probably has a set of 24VDC terminals built in ...

note that some Radio Shack pots that are marked 5K might be at the high or low end of the tolerance range - so you might not be able to go all the way from 4 to 20 milliamps ... but you still should get enough of a range to make for some interesting experiments ...

if you skip the box and the batteries, then less than $5 or $6 bucks should put you into the "analog input" game ...

 

[castlerock]

http://www.plctalk.net/qanda/showthread.php?p=14314&postcount=3

this should get you going ... when you calculate the needed resistance, don't forget that the input module will add 250 ohms to the circuit ...

i didn't know that. good info ron.

to johnny: subtract that 250 ohms from the values i gave. that should get you in the ballpark.

 

[johnnysparks24]

Thanks for the help!!

Thanks again for the help. I hope once I get the parts hooked up I'll be able to figure out the scaling end of the deal.

Thanks John