67nate

sorry, I attached the wrong code (it is now updated)

I used Measurement and Automation explorer to communicate and that is working

But labview doesn't But it should be com 1? I wasn't sure if it was that or the 34970A (the one that worked for the GPIB) I tried both and neither work.

It seems like I'm missing something in initilizeing the serial port but I havn't a clue what.

I can't seem to comunicate with the Agilent

I was able to when I was using GPIB but now I need to with RS-232 and I can't get it to work.

I'm getting error -1073807246 which is

Property Node (arg 1) in VISA Configure Serial Port (Instr).vi->6temp.vi

So I know somethings wrong with my configuring of the serial port but I don't know what.

I have checked all the settings like baud rate and parity and the are all correct.

Does any have any ideas?

For the benifit of other readers: I solved the problem by using math to split the number in to two different numbers rather than splitting the string.

I'm trying to split the string. If I imput my own string I want to be able to split the check and append it to my string. So if the Xor check is 23 (one byte) I want to be able to change it to 32 33 (two bytes the first being the 2 and the second being the 3)

If there is a way to change the xor check from a hex string to a decimal sting without converting the value [23 (hex) = 23 (decimal)] that would work great.

Thanks,

Nate

Hi again, thanks for the help but I want to get the 2C and the 3243 in the same format so I can see if they are equal. I can't open your VI (I have only 7.1) so I'm not sure if those wires went down to do anything. I'm also not sure how to attach a picture. Anyway here is what I have I want string and XOR checksum to be the same.

Thanks,

Nate

P.S. I could add a screen shot if someone told me how. What would the URL be?

I'm trying to error catch incomming code. It comes in as a hex representation of ascii. (05 30 36 44...)

To make sure nothing gets lost the last to bits before the termination bit are a Xor calculation of all previous bits.

The problem is the formatting, here's an example:

Incomming string: 0546 4630 5244 3030 3030 3738 3243 0D

Xor of relevent bits = 2C This is one bit I now need to seperate the bit to match it with the 32 43 for 2 C.

I can't figure a way to seperate it since it is just 1 bit.

Thanks,

Nate

Thank you so much,

wow that was easy

I'm trying to talk with a EZT-550 (it runs a temp. chamber)

I can communicate with it in hyperterminal but I would like to use labview. I'm having trouble writting the string because it uses non-displayable characters.

To use hyperterminal I first write the cammand in visual slickedit writting out the hex values (ie 313836 is 186) I save this as a file and then send it using hyperterminal.

I then get back my data in ascii form (ie FE0043F)

I would like to use labview to send and read the commands but I can't figure out how to send the ENQ (05 in hex).

Thanks,

Nate