Minimum Capture Points

The minimum capture point maintains the minimum encountered value for a point. The minimum capture point can be a signed integer, an unsigned integer or a floating point data type. The minimum capture point is determined by comparing the current source point value with the minimum value, and if the current value is less than the minimum value, the current value is then stored as the minimum capture point. The minimum value is maintained in the minimum capture point until a Reset condition occurs.

A Reset condition occurs when the reset point is changed causing the minimum capture point to reset. The reset causes the minimum capture point to be reset to the configured init_value from derived_point.dat and, if the init_value is not present, then the minimum point has no value until a new data value is received. The reset point could be activated by an operator or automatically by the system.

Specifications: The minimum capture point is a derived point with the calculation_type set to 5.

More information

Derived point file (DERIVED_POINT).