FB_BA_FdbBinary
![FB_BA_FdbBinary 1:](Images/png/11359831947__Web.png)
The template is used to monitor binary feedback signals such as the end positions of dampers or valves. However, it can also be used for differential pressure monitoring by means of a differential pressure monitor.
![]() | The initialization of the template takes place within the method FB_Init. |
Block diagram
![FB_BA_FdbBinary 3:](Images/png/15925422091__Web.png)
Syntax
FUNCTION_BLOCK FB_BA_FdbBinary EXTENDS FB_BA_View
VAR_INPUT
bEn : BOOL;
bCommand : BOOL;
bFeedback : BOOL;
END_VAR
VAR_OUTPUT
bDst : BOOL;
END_VAR
VAR_INPUT CONSTANT
DelayFeedback : FB_BA_AV_Op;
Dst : FB_BA_BV;
END_VAR
VAR_INPUT CONSTANT PERSISTENT
{attribute 'parameterUnit':= 's'}
nInterruptionDelay : UDINT := 1;
END_VAR
VAR
FdbCtrl : FB_BA_FdbCtrlBinary;
END_VAR
Inputs
Name | Type | Description |
---|---|---|
bEn | BOOL | General enable of the template. |
bCommand | BOOL | The switching actuator output of the aggregate to be monitored is connected to the input. |
bFeedback | BOOL | The feedback signal of the aggregate to be monitored is connected to the input, e.g. a differential pressure monitor, flow monitor or limit switch. |
Inputs CONSTANT
Name | Type | Description |
---|---|---|
DelayFeedback | Analog value object for entering the time delay of the feedback. The travel time of the actuator can be used. In the case of differential pressure monitoring, a time delay must be specified here until the system has to built up the required differential pressure. | |
Dst | Binary object for displaying the fault. |
Inputs CONSTANT PERSISTENT
Name | Type | Description |
---|---|---|
nInterruptionDelay | IUDINT | Analog value object for entering the switch-on value for FixedLimit. In the case of differential pressure monitoring, a pressure value must be selected here which must not be undershot during the running process. |
Variables
Name | Type | Description |
---|---|---|
FdbCtrl | Monitoring the binary feedback of the actuators. |
Requirements
Development environment | Necessary function |
---|---|
TwinCAT from v3.1.4024.35 | TF8040 | TwinCAT Building Automation from V5.0.0.0 |