Applies To:
  • CitectSCADA 5.00, 5.01, 5.10

The CTAPI functions, ctPointRead(), ctPointWrite(), and ctListRead() only access tags from the current I/O Server.

CIT has confirmed this to be a problem in Citect for Windows versions 5.00 to 5.10. This problem has been fixed in version 5.20.

This problem only occurs when you call into the CTAPI on one I/O Server and try to access tags from another I/O Server. You may work around this problem by calling into the CTAPI on a Citect Client. From a Citect Client you can access tags on any I/O Server.