This is probably a strange request and I don't know if such a product even exist but here goes. I am looking for an inline rs-232 "component" that will, on the fly, convert ASCII commands to HEX or decimal hopefully selectable. It would need to be a standalone unit (not a computer) that sits inline from a controller to the controlled component. If anyone has any ideas it would be very helpful. Thanks in advance and I think I will also cross post this in the custom installer forum.

this is a strange request, as RS232 is only hex or decimal for us humans to use , the data out of a serial port is always digital either "1" or "0", so you may need to give a little more info..