Description

Original instructions

Description of the function

The function FPULSOR generates a periodic rectangular signal for which it is possible to vary the pulse width at 1 and at 0 using the program.

The additional parameters and can be configured.

Representation in FBD

Representation:

Representation in LD

Representation:

Representation in IL

Representation:

LD Enable

FPULSOR Rise_Time, Fall_Back_Time, Mem_Double_W, OUT_Pulsor, Current_Value

Representation in ST

Representation:

FPULSOR(Enable, Rise_Time, Fall_Back_Time, Mem_Double_W, OUT_Pulsor, Current_Value);

Description of parameters

The following table describes the input parameters:

Parameter	Type	Comment
Enable	BOOL	Validation input. The function starts on the rising edge of Enable and is only executed if Enable = 1
Rise_Time	INT	Input word that determines the duration (in hundredths of a second) of the pulse at 1. This is used to define a maximum duration of 5 mins and 27 secs, precise to 10 ms.
Fall_Back_Time	INT	Input word that determines the duration (in hundredths of a second) of the pulse at 0. This is used to define a maximum duration of 5 mins and 27 secs, precise to 10 ms.

The following table describes the input/output parameters:

Parameter	Type	Comment
Mem_Double_W	DINT	Double word for storing internal statuses. It is imperative that this word be used in order for the function to operate.

The following table describes the output parameters:

Parameter	Type	Comment
OUT_Pulsor	EBOOL	Pulse output at 0 for the duration of Fall_Back_Time and at 1 for the duration of Rise_Time.
Current_Value	INT	Output word that increases from 0 to Rise_Time + Fall_Back_Time as the timer counts (in hundredths of a second).

NOTE: a modification of the Rise_Time and the Fall_Back_Time is taken into account even during the time out. The sum of Rise_Time + Fall_Back_Time has a maximum duration of 5 minutes and 27 seconds (32700).

EN stands for ENable; it is an optional block input. When the EN input is enabled, an ENO output is set automatically.

If EN = 0, the block is not enabled; its internal program is not executed, and ENO is set to 0.

If EN = 1, the block's internal program is run and ENO is set to 1. If an error occurs, ENO is set to 0.

If the EN input is not connected, it is set automatically to 1.

ENO stands for Error NOtification; this is the output associated with the optional input EN.

BOOL is the abbreviation for the Boolean type. This is the basic data type in computing. A BOOL variable can have either of the following two values: 0 (FALSE) or 1 (TRUE).

A bit extracted from a word is of type BOOL, for example: %MW10.4.

DINT is the abbreviation of Double INTeger (encoded in 32 bits).

The upper/lower limits are as follows: -(2 to the power of 31) to (2 to the power of 31) - 1.

-2147483648, 2147483647, 16#FFFFFFFF.

EBOOL is the abbreviation of Extended BOOLean. An EBOOL type has a value (0 (FALSE) or 1 (TRUE), but also rising or falling edges and forcing functions.

An EBOOL variable occupies one byte in memory.

The byte contains the following information:

The default value of each bit is 0 (FALSE).

INT is the abbreviation of single INTeger (encoded in 16 bits).

The upper/lower limits are as follows: -(2 to the power of 15) to (2 to the power of 15) - 1.

-32768, 32767, 2#1111110001001001, 16#9FA4.