tpc-2006 serial transmits 0x03 by itself

[BugBuster]

It seems that when I ask Serial Port Write.vi to transmit a binary message not terminated by <CR>, it autonomously terminates the message with ETX (0x03).
I have confirmed several ways that the ETX is not in the string argument I am supplying to Serial Port Write.vi. I can find no way to turn this feature off.

(BTW, an NI person suggested that I use VISA functions, but they simply do not work with TPC as far as I can tell. I can't get a VI with a VISA function in it to run at all. As soon as I replace all VISA functions with the Serial Compatibility functions, they work.)

[SamboNI]

Hi BugBuster,

I'm surprised that the VISA functions are not working for you. Which version of the PDA or Touch Panel Module are you using? What exactly is the error that is happening when you try to use the VISA functions and at what point does it happen (compile, run, etc)?

How are you testing that Serial Port Write also sends this ETX? Are you cabling back to a PC and running hyperterminal or what?

Best regards,