Applies To:
  • CitectSCADA 1.00 1.01 1.10 1.11 1.20 2.00 2.01 3.00 4.00

Question: We need an 8 or 16 port serial card what will work with a Pentium, 2 TIWAY (TICVU) cards and at least 32MB of main memory. 

With 2 TIWAY CVU cards and 32MB of memory you cannot install any Digiboard as you don't have any available memory window. You cannot install the Digiboard below 1Mb as it will clash with the 2 TIWAY cards and you cannot install it above 1MB as you have more than 16MB of ram.

Your only solution is to use another brand of serial board which does not have a memory mapped window. If you use another brand of board you must use their serial port driver. This serial port driver will have limitations when used under Windows 3.x. This includes lower performance and a maximum number of serial port supported (either 4 or a maximum of 9), check with the supplier for details. Also see Q1825 for more information on this problem. If you use Citect version 4.x under Windows 95 or Windows NT these limitations don't apply.