Siemens SIMATIC ET 200S Operating Instructions Manual page 286

2PULSE
5.4 Modes and Functions
Parameters of the "Pulse width modulation" operating mode
Parameter
Operating mode
Time base
Output format
Function DI
On-delay
Minimum pulse duration
Time period
1)
Read the information provided above on "Setting the time period" and on "Isochronous mode".
1)
286
Meaning
Set the "Pulse width modulation"
operating mode.
Use the time base to select the
resolution and the value range of the
time period, the minimum pulse duration,
and the on-delay.
Choose between the Per mil, and the S7
analog output formats, depending on
which output value resolution you need.
You can use the digital input DI as an
input or as a HW enable.
The time from the start of the output
sequence to the output of the pulse train.
Minimum pulse duration and minimum
interpulse period:
Enter the response time of the actuator
connected to your DO digital output.
Setpoint of the time period
When specifying the time period take
into account the set minimum pulse
duration and the response time of your
final controlling element that is
connected to the digital output DO.
When the short control interface is used,
you can use the "Time period factor" to
change the time period in your control
program in non-isochronous mode.
Value range
Pulse output

Pulse-width modulation

Pulse train

On/Off-delay

Frequency output

0.1 ms

1 ms

Per mill

S7 analog output

Input

HW enable

0 to 65535
0 to 65535
With time base 0.1 ms:
2 to 65535
With time base 1 ms:
1 to 65535
Operating Instructions, 06/2010, A5E00124867-07
Default
Pulse width
modulation
0.1 ms
Per mill
Input
0
0
20000 → 2 s
Technological Functions