OperatingHours

OperatingHours (FB)

FUNCTION_BLOCK OperatingHours

Short description

Counter for operating hours and switch-on events

Representation

Interfaces

Inputs

Name	Data type	Value range	Initial value	Function
xFb	BOOL			Counter - input
xReset	BOOL		FALSE	Enable - input - reset

Outputs

Name	Data type	Value range	Initial value	Function
udiOperatingHours	UDINT			Counter - output - operating hours
udiCountFb	UDINT			Counter - output - switch-ons
dtLastFb	DATE_AND_TIME			Date/time of the end of the last counting process

Function description

General

This function block is used to record the operating hours and switch-on events at the counter input xFb. The outputs udiOperatingHours and udiCountFb are reset to 0 as soon as a rising edge is detected at the input xReset A counting process is active as long as the counter input xFb is TRUE. The output udiOperatingHours shows the cumulative duration of the counting processes since the last reset operation in hours. The output udiCountFb is incremented with each rising edge at the input xFb is incremented. At the output dtLastFb the current date / time is available during the counting process. At the output dtLastFb the date / time at the end of the last counting process is available outside the counting process. At the output dtLastFb the initialization value DT#1970-1-1-0.0.0 is output before the first counting process.

Value ranges of the outputs udiOperatingHours and udiCountFb

Valid counter values are within the limits 0 and 4294967295. Incrementing the counter value 4294967295 resets the counter value to 0. Subsequently the counter value is incremented continuously again.

Prerequisite for the use of the OperatingHours function block

The use of the TimeRead2 function block is required for correct operation.

Write access to the counter values

Via the path 'InstanceName._OperatingHours.udiOperatingHours' or 'InstanceName._OperatingHours.udiCountFb' write access to both counters is possible.

CODESYS

InOut:

Scope	Name	Type	Initial
Input	xFb	BOOL
Input	xReset	BOOL	FALSE
Output	udiOperatingHours	UDINT
Output	udiCountFb	UDINT
Output	dtLastFb	DT

Methods:

mReset

Structure:

• mReset (Method)