.1    Provide means for addition, deletion, definition and modification of points and point types through the operator
       interface.

.2    Provide links in the database such that if a point name is changed in database, all database occurrences of that point
       will automatically be changed.

.3    Provide direct keyboard override of all physical and virtual points with an indication on the display of any point that
       is operating under a keyboard override.

.4    The database for each physical or virtual point must only require definition once, regardless of the number of
       locations where it is used.

Provide the following:

.1    Operator defined digital and analogue alarms including operator defined limits and differentials from set points.

.2    Auto lockout of alarms when alarmed system is commanded off.

.3    Auto display of operator defined alarm messages.

.4    Operator defined routing of alarms.

.5    Log of points in alarm.

.1    Provide point trend logging capability for any system point as follows;

       .1    User defined start/stop time or continuous trending.

       .2    Sampling period user-adjustable from 5 seconds to 24 hours as a minimum.

       .3    Change of value or change of state initiated.

       .4    Display and print a minimum of 4 points simultaneously across the page.

       .5    Ability to automatically dump trend logs to disk in ASCII format.

.1    System shall have the ability to graphically display logs or trended points in colour:

       .1    Capability for display of a minimum of 4 points simultaneously, both analog and digital on the same graph.

       .2    Capability for auto-scaling and ability to manually control horizontal and vertical scales.

.1    Provide the capability to totalize the runtime of all digital points.

.2    Each totalizer shall record the total runtime and total number of starts from a resettable start date.

.1    Analog Points

       .1    System shall have the capability to accommodate user defined scale ranges which can be attached to any input
              or output.

       .2    Provide conversion tables or other mapping functions for analog input and analog output points that define how
              the input or output hardware values relate to the engineering units used.

       .3    This function must accommodate non-linear relationships.

       .4    If a conversion table type function is used, it must have a minimum of 10 individually definable segments.

       .5    Provide capability to assign any user defined unit to the analog point (i.e. percent, Deg C, Deg F, etc.).

.2    Digital Points

       .1    Provide the capability to define in database whether a digital input point is normally open or normally closed.

       .2    Provide the capability to assign any pair of engineering units to the relay open and relay closed positions of
             digital output points, (i.e. start/stop, on/off, open/closed).

.1    Provide controllers in each SAP and TUC.

.2    Provide, in each controller, the following set up and tuning capabilities:

       .1    Direct or reverse acting.

                 .2     Output value to control, 0 to 100%.

                 .3     Set point.

       .4    Proportional Gain.

       .5    Integral gain.

       .6    Derivative gain.

       .7    Control loop bias.

.3    Provision shall exist for the modification of the above by OCL programs and/or the operator while on-line through a
       terminal.

.1    The stand alone panels (SAPs) and soft terminal unit controllers (TUCs) shall have the capability for the operator to
       develop and run custom application programs. For this, the system shall have a proven OCL which shall be
       capable of reading the value and/or status of all system points and initiating both digital and analog control actions
       from any user defined combination of calculations and logical expressions which shall at a minimum include:

       -   Addition, subtraction, multiplication and division;

       -   Square roots, summations, absolute differences;

       -   Logical "not", "and", "or", "nor", "and", "less than", "greater than", and "equal to" or their logical equivalents; 

       -   Time delays in seconds, minutes or hours;

       -   Ability to embed comments in system generated documentation;

       -   Ability to use time-of-day and day-of-year in algebraic calculations; and

       -   Ability to use weekly and annual schedules.

.2    The supplied system's OCL shall support the concept of output oriented code, or in other words, a program shall
       be generated for each controlling output or logical group of outputs. Required programs for each system are listed
       in the generic start up logic, although manipulation will be required to achieve the intent in each vendor's system.

.1    Provide a full screen editor to enable editing of the OCL programs source code down to character by character
       changes.

.2    Provide the capability in the editor of accepting programs from ASCII files that have been created on other
       MS-DOS compatible computers and word processors.

.3    If a point is removed from the database, show an error signal for undefined character on the appropriate line
       whenever a program using that point is viewed, edited or printed.