FB_BA_SubTrend

The FB_BA_SubTrend function block allows to subscribe to a trend object.

Inheritance hierarchy

FB_BA_Base

Syntax

FUNCTION_BLOCK FB_BA_SubTrend EXTENDS FB_BA_Subscriber
VAR_OUTPUT
  bEvent                    : BOOL;
  nRecordCount              : UDINT;
  nTotalRecordCount         : UDINT;
END_VAR

Outputs

Name	Type	Description
bEvent	BOOL	The variable signals an abnormal event of an object. The type of event, e.g. an alarm, a maintenance message, etc., is described within the event class associated with the object.
nRecordCount	UDINT	Number of records.
nTotalRecordCount	UDINT	Absolute number of records.

Name

Type

Description

bEvent

BOOL

The variable signals an abnormal event of an object.

The type of event, e.g. an alarm, a maintenance message, etc., is described within the event class associated with the object.

nRecordCount

UDINT

Number of records.

nTotalRecordCount

UDINT

Absolute number of records.

Properties

Name	Type	Access	Description
Enable	BOOL	Get, Set	Enable of the subscription.

Methods

Name	Description
GetData	Contains the subscribed data.

Requirements

Development environment	Required PLC library
TwinCAT from v3.1.4024.35	Tc3_XBA from v5.3.0.0

Further Information

GetData