Siemens Simatic S7-1500 CPU 1512C-1 PN User Manual page 56

Technology functions
3.2 Pulse generators
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
CPU STOP STOP
Substitute value
for pulse output
(DQA)
Diagnostics No supply voltage
interrupt L+
Parameter High-speed output
(0.1 A)
56
Meaning
The parameter "Output substitute
value" generates a substitute
value upon CPU STOP, which you
can define with the parameter
"Substitute value for pulse output
(DQA)".
The parameter "Continue opera-
tion" still generates the PWM out-
put signal upon CPU STOP, which
was generated before the CPU
STOP.
If you have set the option "Output
substitute value" for "Reaction to
CPU STOP", the parameter "Sub-
stitute 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 "Contin-
ue 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 inter-
rupt of the channel in the case of
no supply voltage L+
The "High-speed output (0.1 A)"
parameter is used to specify
whether you want to use the se-
lected pulse output as high-speed
output. Requirement for this is that
the selected pulse output supports
the operation as high-speed out-
put.
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
frequencies of up to 100 Hz and
currents of up to 0.5 A depending
on the performance capability of
the selected output.
Activated
The output supports frequencies
of up to 100 kHz and currents of
up to 0.1 A.
CPU 1512C-1 PN (6ES7512-1CK01-0AB0)
Manual, 12/2017, A5E40898741-AA
Default
Output substi-
tute value
0
Deactivated
Deactivated