The checksum is computed as follows:
adding 14, 44(ascii comma), 100 together = 158, so 10011110, then complement it i get 01100001
if i clear the most significant bit, i assume that means delete it?: 1100001
then set the most significant remaining bit, that means make it a 1? so i get 1100001 (dec:97 hex:61)
also forgot to add, when i run that line into the sample program, i get the following error:
This error is different if i unplug the power supply, so that means that the LabView is at least seeing the powersupply on COM3, which is good. but what i did above definately doesnt work 🙂
I had the same problem with my USB-RS232 devices. Solution: Add the buffer function after the configuration function and I think your problem is solved.
btw. you posted at the wrong board, this board is for instrument control.
In a start VI there is a configuration for the COM port. After this configuration you should at the buffer function.
It is not in the standard VI's so you have to modify it. The buffer function can be found at the standard serial pallette. You can also use the help to find it.