Let me understand what you are trying to do.. Do you want to use the GPIB commands and send them through the COM port?
Or Do you have a set of "serial" commands that you want to send through the COM port? I don't think you can send GPIB commands through the serial port. The embedded software must allow for serial communication. There are many ways that this can be made available, from CLI (command line interface), menu system, calling functions, etc.. However, that support is from the embedded code. Typically, a set of instructions (commands) should be provided from the manufacturer, especially if the product comes with a COM port. However, those instructions "may" differ from those for the GPIB port... or the syntax could be different. Did you check with the manufacturer for drivers that permit serial communication? They may come in "dll" format. In that case, you can call the functions using "Call Library Function Node" which is located inside "Advanced" on the Functions Palette. As I mentionned at the top of my reply... I am not sure I understood what you are trying to do. Hope this helps.. By the way, who makes the light modulator? Maybe I can look at their website and find out more details. -JLV-
