Applies To:
  • CitectSCADA 5.41
  • CitectHMI 5.41
Summary:
After an update from an older Citect for Windows version I get the following compile error "Bad IO Device variable".

In my project I used the MELSEC protocol.

 

Solution:
There was an incorrect entry in the Melsec.dbf file. Copy the Melsec.dbf from Citect V5.40 to your version 5.41. You can find the Melsec.dbf file in the Citect\BIN folder.

A full driverpack for the Melsec driver is also available from the Support section of the Citect web site.

 
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