BAC_BO_02

Functional description

The template determines the current switching value from several prioritized setpoints (priority matrix, inputs of the template) and transmits the switching value to a Bus Terminal (see I/O link).
The template records the feedback of the actuator via the two inputs bEnFdb/bFdb of the template.
The template is used to output and monitor switching commands or pulses (e.g. 1-stage motors/pumps, dampers).

Interface

Block diagram

VAR_INPUT

bEnSfty    : BOOL;
bValSfty   : BOOL;
bEnDst     : BOOL;
bValDst    : BOOL;
bEnLoc     : BOOL;
bValLoc    : BOOL;
bEnPgm     : BOOL;
bValPgm    : BOOL;

bEnSfty: Safety priority enable

bValSfty: Digital value safety priority

bEnDst: Enable fault priority.

bValDst: Digital value fault priority.

bEnLoc: Enable priority manual intervention

bValLoc: Digital value priority manual intervention

bEnPgm: Enable program priority

bValPgm: Digital value program priority

VAR_OUTPUT

bPrVal    : BOOL;
udiActvPrio   : UDINT;

bPrVal: current value of the binary output object.

udiActvPrio: display of the current priority of the BO object

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