Technology functions
3.2 Pulse generators
CPU 1512C-1 PN (6ES7512-1CK01-0AB0)
66
Manual, 12/2017, A5E40898741-AA
Category
Parameter
Meaning
Value range
Default
Clock generator forward
(A)
for "PTO (Count up (A)
and Count down (B))"
The "Clock generator
forward (A)" parameter
defines the hardware
output for PTO signal
A.
[Output address DQ for PTO
signal A (output frequency
100 kHz)]
grayed out
Read only ac-
cess to the pa-
rameter
Clock generator back-
ward (B)
for "PTO (Count up (A)
and Count down (B))"
The "Clock generator
backward (B)" parame-
ter defines the hard-
ware output for PTO
signal B.
[Output address 1 of the DQ for
PTO signal B (output frequency
100 kHz)]
grayed out
Read only ac-
cess to the pa-
rameter
Phase A
for "PTO (A, B phase-
shifted)" and "PTO (A, B
phase-shifted, quadru-
ple)"
The "Clock generator
output (A)" parameter
defines the hardware
output for PTO signal
A.
[Output address of the DQ for
PTO signal A (output frequency
100 kHz)]
grayed out
Read only ac-
cess to the pa-
rameter
Phase B
for "PTO (A, B phase-
shifted)" and "PTO (A, B
phase-shifted, quadru-
ple)"
The "Clock generator
output (B)" parameter
defines the hardware
output for PTO signal
B.
[Output address 1 of the DQ for
PTO signal B (output frequency
100 kHz)]
grayed out
Read only ac-
cess to the pa-
rameter
Drive enable output
The parameter "Drive
enable output" defines
the hardware output of
the output "Drive ena-
ble output".
[Output addresses of the enable
output DQn (output frequency
100 Hz)
--
Reaction of the PTO channel to CPU STOP
The PTO channel reacts to a change to CPU STOP with the removal of the drive enable (to
the extent that the drive enable output is configured) and with output of the velocity setpoint
0 at the hardware outputs configured for the signal tracks A and B. The CPU STOP reaction
of the PTO channels cannot be configured.
Note
Reaction to CPU STOP
Upon CPU STOP, the hardware outputs assigned for the PTO outputs A and B can switch to
signal state 'High' (1) and/or remain there. A switching/remaining of the two hardware
outputs to/in signal level 'Low' (0) is not guaranteed.
Controller
The pulse output channels for the four modes of the pulse generators (PTO) are controlled
using Motion Control via the technology objects TO_SpeedAxis, TO_PositioningAxis and
TO_SynchronousAxis. With these operating modes, the control and feedback interface of the
channels is a partial implementation of the PROFIdrive interface "Telegram 3". For a detailed
description of the use of motion control and its configuration, refer to the S7-1500 Motion
Control function manual (
http://support.automation.siemens.com/WW/view/en/109749262
and the STEP 7 online help.
Summary of Contents for Simatic S7-1500 CPU 1512C-1 PN
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