.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.

3.5    Totalization

.1    Provide the capability to accumulate units of all analog and digital points.

3.6    Scheduling

.1    Provide scheduling feature that allows for creation of start/stop schedules and their use in programs as follows:

       .1     Weekly       - 20 minimum per SAP
                                 - time of day, day
                                 - weekend, alternate day
                                 - direct override by Annual Schedules
                                 - 8 daily stops/starts per day

       .2    Annual         - 6 minimum per SAP
                                 - entire calendar year available

3.7    Point Definitions

.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).

3.8    Software Controllers

.1    Provide controllers, resident in each SAP and/or TUC, including a three-term, proportional, integral,
       derivative, (PID) control algorithm.

.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    Sampling time - variable from 1 to 60 seconds.
       .8    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.

3.9    Operator Control Language (OCL) Capabilities

.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    Provide code for the following control strategies:

       .1    If real time is between 8:00 AM and 4:00 PM and minimum space temperature is more than
              0.5 deg C below the building objective temperature, then start Pump #1.

       .2    As soon as Pump #1 has been on for 10 minutes, turn on the boiler.

       .3    If day of the year is before July 2, then factor A is equal to 0.1667 - (July 2 - day of year)/1368,
              otherwise the factor A is equal to 0.1661 - (day of year - July 2)/1368.

       .4    Seclect high of space temperature #2, space temperature #3 and space temperature #6.

       .5    If the real time is greater than 8:00 AM minus a factor, times the difference between the setpoint
              and space temperature and if the real time is less than 3:30 PM and if outside air temperature is
              less than 10 deg C, then enable boiler.

.3    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.