dsc opc problem

[Vincent Vega]

Hi!

Im trying to connect Labview to Siemens S7-200 with PC-Access OPC server. I tried to use IO Serer and connect it to PCAccess, to PLC. Then I tried to connect it with datasocket to PC Access, and both times i had the same problem. Communication was too slow. For example, when i changed some value in labview, opc server reached that value in 5 seconds. How can i solve this problem?

Thanks

[Juan G]

This problem could be because either the scan rate from the PC-access OPC server is too slow, the client program is reading data too slow, or both.

Are you using Shared Variables or Datasocket?

Have you checked the Tag properties on the OPC server? There should be a scan rate from the PC-access OPC server and you can set that rate.

Also, you can check in the tag or variable manager how fast the data is updating.

Regards,