Checksum

[AnniHHH]

Hello,

I'm working with CHECKSUM in LabVIEW for the first time.

I design a datalogger LabView program to receive serial data (45 data from sensors + 46th is a checksum) from a tool via RS485.

I have no idea what should I do with the checksum on the LabVIEW program. Please provide me some basic information, suggestions, or examples!

I appreciate your help! 

[crossrulz]

What device are you talking to?  How is the checksum defined?  I have seen so many variations of checksums, that it would not be prudent to give any real advice without specifics.

[cbutcher]

To add a little more detail that may perhaps be useful (apologies if not), do you have a manual for your datalogger/instrument that describes the communication protocol?

When you receive 45 (characters?) of data and one checksum value (also a byte?), is there detail about the calculation that should be carried out in some documentation for your device? Failing that, is the checksum method named?

If there are no more details available, is there at least an example of a message together with its checksum? This might allow forum users to find (based on common options) using 'trial-and-error' the correct method - but this is definitely a less preferred option, and you might not find many volunteers!