Hello, You can enable or disable termination characters by using the Config Serial Port VI in your flow of programming. See the LabVIEW <-> Serial.vi example that ships with LabVIEW (go Help -> Find Examples...)for proper use of this VI.
Note that the termination character specified in the config serial port VI applies <b>only</b> to reads and not to writes. This stems from the fact that this Vi sets the "VI_ATTR_ASRL_END_IN" attribute only. Thus, it will not be appended to a write buffer. In your application, it seems that you should disable the termination character on this VI (or at least change it to something besides LF). You can do a "get bytes at port" as others have mentioned to find out how many bytes to read in, and then read exactly this many bytes from the port. As long as your device sends all its data before you do this read, you will not lose any data with this method. On the other hand, if you device sends, say 10 out of the total 25 bytes, then your Get Bytes at Port will only return 10 and you will only read 10 bytes; you will need to be careful with this "no termination character" approach. If any of this is unclear, please respond by posting here. Scott B. Applications Engineer National Instruments
