VIPA CPU 21 Series User Manual

Manual VIPA CPU 21x Chapter 11 Integrated OBs SFBs SFCs
HB103E - Rev. 05/45 11-19
SFC 223 PWM
This block serves the parameterization of the pulse duration modulation for
the last two output channels of X5.
You define a timebase, a period, the pulse duty ratio and min. pulse length.
The CPU determines an pulse series with an according pulse/break
relation and issues this via the according output channel.
The SFC returns a certain error code. You can see the concerning error
messages in the table at the following page.
The PWM parameters have the following relationship:
Pulse length Pulse
break
Period length
Pulse duty ratio
1000500 700
Output
DO
Time
Period length = timebase x period
Pulse length = (period length / 1000) x pulse duty ratio
Pulse break = period length - pulse length
The parameters have the following meaning:
Description
Parameters
DO 8xDC24V 1A
L+
.0
.1
.2
.3
.4
.5
.6
.7
F
1
2
3
4
5
6
7
8
9
I0
PWM
Ch. 0
Ch. 1
11x 21x 31x 51x
✓

VIPA CPU 21 Series Specifications

General

Brand	VIPA
Model	CPU 21 Series
Category	Control Unit
Language	English