We have been applying the CM0711 custom module to fulfill this. we have several loadouts for reading 4-20mA sensors and interacting with a larger IQAN system, as well as some 'stand alone drivers' (like TOC2) that use a 4-20mA command signal fromm a PLC and then drive pumps/valves.

David, I looked at this product here
it looks like it is not programmable through IQAN Software. Is this product marketed in the US?
Under review
Hi Steve
There is hope for this in the future. We are always looking at new solutions and these I/O types have been requested for a long time. I can't disclose details at this point but please keep your hopes up :)