Solved

MSComm control with 8 port serial expander

Posted on 2002-04-03
1
197 Views
Last Modified: 2010-05-02
I need 6 serial ports. I am using a 8 port expander with 6 MSComm controls on 6 different forms.  Using OnComm with CommEvent = comEvReceive starting a doloop until InStr = vbCrLf.  One port at a time works OK, but all six tend to get data from one port mixed into the data from another port.
0
Comment
Question by:Wanderer227
1 Comment
 
LVL 3

Accepted Solution

by:
kfrick earned 200 total points
ID: 6919259
Don't use any DoEvents in your incoming communications loops.

How are you detecting incoming data?

If you are using the OnComm event, you can set RThreshold=0 to ALL the COM ports while you are reading from any one.

-kf
0

Featured Post

DevOps Toolchain Recommendations

Read this Gartner Research Note and discover how your IT organization can automate and optimize DevOps processes using a toolchain architecture.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

You can of course define an array to hold data that is of a particular type like an array of Strings to hold customer names or an array of Doubles to hold customer sales, but what do you do if you want to coordinate that data? This article describes…
Since upgrading to Office 2013 or higher installing the Smart Indenter addin will fail. This article will explain how to install it so it will work regardless of the Office version installed.
Get people started with the process of using Access VBA to control Outlook using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Microsoft Outlook. Using automation, an Access applic…
Get people started with the process of using Access VBA to control Excel using automation, Microsoft Access can control other applications. An example is the ability to programmatically talk to Excel. Using automation, an Access application can laun…

832 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question