MSComm RS232 communication

[DOK]

As a new user to Visual Basic, I am trying to use MSComm to communicate serially with a datlogger which i am trying to poll every second for data. I am getting VB 6.0 Pro tomorrow and should have no problems with the control itself as i do now with VB 5.0 However, do need help with setting the time intervals for polling the logger using MSComm and also if i can open both port on the same form if i wish to communicate with another piece of serailly linked equipment. Anyone?

[Andrew Herrmann]

If you're looking to send a "command" to your data logger every second to get data, just plop down a timer and set the interval. If the data logger is active and you want to check the data that it has sent to the PC, the MSComm control will toss the incomming data into a buffer... You can read the contents of the incomming buffer after a specified time or you can let the oncomm event handle it:

Public Sub MSComm_OnComm()

Dim TempBuf As Variant


If MSComm.CommEvent = comEvReceive And MSComm.InBufferCount > 0 Then
TempBuf = MSComm.Input
Call HandleTheData(TempBuf)
end if

end sub

I don't see any reason why you can't just plop down two instances of the MSComm control (MSComm1 and MSComm2) -- as long as you open a different physical port for each control you shouldn't run into any problems.

Hope this helps!

[Edited by Andrew Herrmann on 03-21-2000 at 09:10 AM]

[DOK]

Thanks a million. That should get me strsted anyway!