Barcode Reader to RSView32

[asteroide]

Hi Friends

I have a Cognex DM100S Barcode Reader and I need to put the reading in a Memory Tag in RSView32.

I have the DM100S working in COM5 with hyperterminal.

How can I put the Barcode Reading in RSView32?


Thanks in advance.

 

[Manglemender]

Some options spring to mind:

1) Connect the reader to a serial interface on your PLC and read in the data that way.
2) Write an program to run on your SCADA PC to read the bar code into a text box that has a DDE link. In RSVeiw32 set up a DDE link to your application.
3) Get an OPC server APP for your reader.

In theory, you could write some VBA code in RSView32 with the MScomm control but if you are polling the reader all the time then nothing else will work as RSview32 is single threaded.

Nick

 

[asteroide]

Hello Manglemender.

The problem is that the barcode reader is connected directly to the PC through USB (I could change to RS232 Barcode Scanner).

The PLC is an PLC-5 with DH+ and it is a 15m of distance from the PC.

So, I need to read the barcode directly in the PC with RSView32.

Thanks a lot

 

[Manglemender]

I am not familliar with your device but although you are using USB you are still reading it as a serial interface (COM5 in Hyperterminal.

Do cognex not have a utility app for the reader that you can link to by OPC/DDE? Have you asked Cognex?

Sorry I can't be more helpful. Last time I did something similar I had to write a DDE application to act as an interface for RSview32 or you could use MSCOMM.

Good luck,

Nick