Technical Reference > CitectSCADA Reference Information > Specifications > Projects

Projects

The table below defines CitectSCADA projects specifications:

Configuration Projects

1022*

Number of Variable Tags defined in CitectSCADA

4,194,303 (but no more than 500,000* is the recommended)

This is a system wide limitation for a running system. Tags in every project included in the project you are currently compiling and running will contribute to this figure, regardless of clustering.

Be aware that if you are using one or more tag based drivers in your project, the figure depends on the bit length of your variables defined for the driver(s). This is due to the need for these drivers to use OIDs to identify each tag. For example, a tag based driver that uses 32-bit digitals may reduce the number of possible variables by 32 (i.e. if your project contains only 32-bit digitals, you can have a maximum of 131,072). If no bit size is defined for digitals by for the driver, it defaults to 16.

Number of Included projects

240 (including the Include project)

Simultaneously logged-in users

250*

Number of reports

1000*

Number of I/O Device addresses monitored by alarms

150000*

Number of historical trends

32000*

Number of trends displayed on the same chart

16*

Number of alarms

65,535 per alarm type

Number of trends displayed on the same page

16000

Number of user functions

4500*

Number of standard built-in functions provided

700

Number of operator commands for the system

3000*

Number of I/O Devices connected to CitectSCADA

16383

Number of simultaneous multiple protocols

4095

Number of areas

255

Number of alarm categories

16376

Maximum simultaneous multi-tasking threads

512

*There is no actual limit to these values; they are maximum recommended values only. However, exceeding this number can impact the Trends Server performance (CPU loading) and the CPU loading of the Client displaying the Process Analyst.