Hi, we have an application where a piece of machinery can be controlled based on a resistance value placed across its remote input. Right now, we are feeding a bank of different resistors into the ouputs of a plc, and feeding the common back to the machine we are controlling. When one of the outputs are triggered (relay outputs, non-isolated) this resistive value is essentially put across the machine, and the command takes place. What I would like to do, instead, is have a 0-10V analog output card attached to something that can produce a variable resistance based on the voltage present at its inputs. (isolated from the resistance) Problem is, I don't know if such a device exists, or where to get it? I know this isn't really 100% on topic, but figured maybe someone out there has done something similar. thanks Jody Gallant CET Shadcomm Ltd.