Communication through serial

hi everyone,
My name is Zhi and I have another problem with on my senior project. Right now, we are trying to make labview communicate with an old stage. Its model is Neat_310M ( I have its manual uploaded). I have beening trying to make an simple communiation like wake up x-axis stage and ask it to move relative 10000 steps. However, I can only sucessfully do these two actions in hyper-terminal. When I used the VI i have set up, the stage does not responding at all.
my concern is that I did not open the serial port properly because while I continuely run the VI, I can still open and run the hyperterminal together. (i believe two programs cannot share the port at the same time).
my other concer is that since the stage controller echo back whatever command i type , for example, I want to ask stage to move relatives 10000 steps, when I type the command, "mr", then the controller will echo back "move relative". After it is echo, I enter the number and the stage moves. I obeserved this kind of respond in hyperterminal. I am wanderin if this kind of responds will cause the problem that i have.
thanks
Message Edited by zhao.lin on 05-12-2008 07:14 PM
Attachments:
test 1.vi ‏22 KB
Neat_310M_Manual.pdf ‏1120 KB

Hi zhoa.lin,
Yes, after you use Serial Write to send a command, you have to use Serial Read to read anything that is being returned. You should use "Bytes At Serial Port" to find out how many bytes to read. And use a string indicator to show what was read.
Remember to close (or hang up) Hyperterminal before running LabVIEW's serial communication.
RayR

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