BAC_AO_01

Functional description

The template determines the current control value from several, prioritised set values (priority matrix, template inputs) and transfers the control value to a Bus Terminal (see IO linking).
In addition, the manual intervention is logged via a digital input LocSwi.

Interface

Block diagram

VAR_INPUT

bEnSfty    : BOOL;
rValSfty   : REAL;
bEnDst     : BOOL;
rValDst    : REAL;
bEnLoc     : BOOL;
rValLoc    : REAL;
bEnPgm     : BOOL;
rValPgm    : REAL;

bEnSfty: Safety priority enable

rValSfty: Analog value safety priority

bEnDst: Enable fault priority.

rValDst: Analog value fault priority.

bEnLoc: Enable priority manual intervention

rValLoc: Analog value priority manual intervention

bEnPgm: Enable program priority

rValPgm: Analog value program priority

VAR_OUTPUT

rPrVal        : REAL;
udiActvPrio   : UDINT;
bStaOverrd    : BOOL; 

rPrVal: current value of the analog output object.

udiActvPrio: display of the current priority of the AO object

bStaOverrd: indicates that the AO object is overridden by a local mechanism,  see LocSwi

VAR CONSTANT

PLT_NUM    : BYTE := 1;

PLT_NUM: all alarms and events of all plant components within a controller are included in a global alarm and event list. The assignment of events and alarms to a plant is defined by the assignment of a PLT_NUM plant number.
The recording and processing of an alarm from an aggregate or a device takes place within the templates by means of the alarm function block FB_BA_Alarm.
The evaluation of the alarms of a plant, e.g. for the generation of a collective message or for plant shutdown in case of relevant faults, takes place within the template BAC_PltAlm_01 by means of the function block FB_BA_AlarmPlt.
The evaluation of different plant events within the templates of a plant, takes place within the template BAC_PltComnMsg_01 by means of the function block FB_BA_ComnMsg.

Important! The assignment and evaluation of the alarms and events of a plant can only be done correctly if all templates of a plant have the same plant number!

The plant number can be assigned in the Project Builder in the parameter menu for the templates or via a column in the Excel import.

Program description

IO linking

Variables for linking with the terminals

Version history