Applies To:
  • CitectSCADA 5.00

I am trying to use the CTApi function ctTagToPoint with the argument dwLength > 1. When I use this point with the ctPointRead function I always get a return value of zero.

There is a problem with the CTApi function ctTagToPoint in which it currently ignores the dwLength argument. This causes ctPointRead not to read the point and return no error value with the value being returned as zero.

CIT has confirmed this to be a problem in Citect for Windows versions 5.00. This problem has been fixed in version 5.00 Service Pack A.