Toittekallott
New Member
Can anyone point me in the right direction as to what is all involved in developing an interface that will use the COM port to switch a set of dry contacts on and off?I have an application that I am developing at present that needs to control an external switch that uses wires. The COM port should switch between a short and an open.Can someone tell me what is all involved in this? My software will be running the XP OS.