Motion Control Is Easy - Siemens SIMATIC S7-1200 Manual

Motion control is easy

The CPU provides motion control functionality for the operation of stepper motors and servo
motors with pulse interface. The motion control functionality takes over the control and
monitoring of the drives.
● The "Axis" technology object configures the mechanical drive data, drive interface,
● You configure the pulse and direction outputs of the CPU for controlling the drive.
● Your user program uses the motion control instructions to control the axis and to initiate
● Use the PROFINET interface to establish the online connection between the CPU and
S
A signal board (SB) expands the onboard I/O to include a few additional I/O points. An SB
with 2 digital outputs can be used as pulse and direction outputs to control one motor. An SB
with 4 digital outputs can be used as pulse and direction outputs to control two motors. Built-
in relay outputs cannot be used as pulse outputs to control motors.
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 basic motion control instructions), the corresponding output addresses (Q0.0 to
Q0.3, Q4.0 to Q4.3) are removed from the Q memory and cannot be used for other purposes
in your user program. 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.
Easy Book
Manual, 11/2011, A5E02486774-04
dynamic parameters, and other drive properties.
motion tasks.
the programming device. In addition to the online functions of the CPU, additional
commissioning and diagnostic functions are available for motion control.
①
PROFINET
②
Pulse and direction outputs
③
Power section for stepper motor
④ Power section for servo motor
The DC/DC/DC variants of the CPU S7-1200 have onboard
outputs for direct control of drives. The relay variants of the
CPU require the signal board with DC outputs for drive
control.
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