Applies To:
  • CitectSCADA 4.00 and above

I have the following problems with the TITCPIP driver:
  1. Phantom digital alarm.
  2. Large number of time-outs.

The TITCPIP.dll dated 13/08/97 has fixed the first problem and eliminated the   time-outs caused by the driver.  A new Citect.ini option parameter has been introduced in this new DLL to reduce the time-outs caused by the PLC:


(Where value >= 1. When set to 1, the driver operates in sync mode.  Default value is the same as MaxPending)

If this parameter is set to 1 and TCP is used, then the number of time-outs caused by the PLC will be reduced to minimum.  Please Note, lowest timeout number does not mean the driver has a maximum performance.