Siemens Simatic S7-1500 Manual page 49

Setting the minimum pulse duration and the minimum interpulse period
You assign the minimum pulse duration and the minimum interpulse period as DWORD
numerical value between 0 and 10 000 000 μs (10 s) with the help of the channel parameter
configuration "Minimum pulse duration".
Parameters of the pulse width modulation (PWM) mode
Category Parameter
Reaction to Reaction to
CPU STOP CPU STOP
Substitute
value for pulse
output (DQA)
Diagnostics No supply
interrupt voltage L+
Parameter High-speed
output (0.1 A)
Output format
CPU 1512C-1 PN (6ES7512-1CK00-0AB0)
Manual, 09/2016, A5E35306440-AB
Meaning
The parameter "Output substitute val-
ue" generates a substitute value upon
CPU STOP, which you can define with
the parameter "Substitute value for
pulse output (DQA)".
The parameter "Continue operation"
still generates the PWM output signal
upon CPU STOP, which was generated
before the CPU STOP.
If you have set the option "Output sub-
stitute value" for "Reaction to CPU
STOP", the parameter "Substitute value
for pulse output (DQA)" defines the
substitute value to be used for the
pulse output of the channel.
If you have set the option "Continue
operation" for "Reaction to CPU
STOP", the parameter "Substitute value
for pulse output (DQA)" cannot be
selected
The parameter "No supply voltage L+"
activates the diagnostic interrupt of the
channel in the case of no supply volt-
age L+
The "High-speed output (0.1 A)" pa-
rameter is used to specify whether you
want to use the selected pulse output
as high-speed output. Requirement for
this is that the selected pulse output
supports the operation as high-speed
output.
Defines the format of the ratio value
(on-load factor) in the field
"OUTPUT_VALUE" of the control dura-
tion of the channel.
Value range
Output substitute value
Continue operation
0
(use substitute value 0)
1
(use substitute value 1)
Deactivated
Activated
Deactivated
The output supports frequencies of
up to 10 kHz (load dependent) and
currents of up to 0.5 A or frequen-
cies of up to 100 Hz and currents of
up to 0.5 A depending on the per-
formance capability of the selected
output.
Activated
The output supports frequencies of
up to 100 kHz and currents of up to
0.1 A.
S7 analog output
Interprets the ratio value in the field
OUTPUT_VALUE" of the control
interface 1/27648 of the current
period duration.
Supported value range from 0 to
27 648
Technology functions
3.2 Pulse generators
Default
Output
substitute
value
0
Deactivated
Deactivated
Per 100
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