Siemens S7-1200 System Manual page 482

Technology instructions
9.3 Motion control
The table below shows the default I/O assignments; however, the four pulse generators can
be configured to any digital output.
Note
Pulse-train outputs cannot be used by other instructions in the user program.
When you configure the outputs of the CPU or signal board as pulse generators (for use with
the PWM or motion control instructions), the corresponding output addresses no longer
control the outputs. If your user program writes a value to an output used as a pulse
generator, the CPU does not write that value to the physical output.
Note
PTO direction outputs can be freed for use elsewhere in your program.
Each PTO requires the assignment of two outputs: one as a pulse output and one as a
direction output. You can use just the pulse output and not the direction output. You can then
free the direction output for other purposes in your user program. The output cannot be used
for both the PTO direction output and in the user program, simultaneously.
Table 9- 56
PTO1
PTO2
PTO3
PTO4
1
2
3
482
Default address assignments of the pulse and direction outputs
Built-in I/O
SB I/O
Built-in I/O
SB I/O
Built-in I/O
SB I/O
Built-in I/O
SB I/O
The CPU 1211C does not have outputs Q0.4, Q0.5, Q0.6, or Q0.7. Therefore, these outputs
cannot be used in the CPU 1211C.
The CPU 1212C does not have outputs Q0.6 or Q0.7. Therefore, these outputs cannot be used in
the CPU 1212C.
This table applies to the CPU 1211C, CPU 1212C, CPU 1214C, CPU 1215C, and CPU 1217C
PTO functions.
Usage of outputs for motion control
Pulse
Q0.0
Q4.0
Q0.2
Q4.2
Q0.4
1
Q4.0
Q0.6
2
Q4.2
Direction
Q0.1
Q4.1
Q0.3
Q4.3
Q0.5
1
Q4.1
Q0.7
2
Q4.3
S7-1200 Programmable controller
System Manual, 03/2014, A5E02486680-AG