Does a current loop converter (232 to 4-20) require a continual refresh of the RS-232 data, or is it a send once and shut up until a new level setting is required? In other words, do I need to continually loop with a SEROUT to maintain the 4-20 output, or just when the sensed signal on the stamp-side of things changes?

 

hi 94,
Welcome to AAC,
Do you have a part number/description of the RS232 to 4/20mA converter.?
E