Open Loop Motion Control With The S7-200; In This Chapter - Siemens SIMATIC S7-200 System Manual

Open Loop Motion Control with the
S7-200
The S7-200 provides three methods of open loop motion control:
Pulse Width Modulation (PWM) -- built into the S7-200 for speed, position or duty cycle
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control
Pulse Train Output (PTO) -- built into the S7-200 for speed and position control
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EM 253 Position Module -- an add on module for speed and position control
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To simplify the use of position control in your application, STEP 7--Micro/WIN provides a Position
Control wizard that allows you to completely configure the PWM, PTO or Position module in
minutes. The wizard generates position instructions that you can use to provide dynamic control of
speed and position in your application. For the Position module STEP 7--Micro/WIN also provides
a control panel that allows you to control, monitor and test your motion operations.

In This Chapter

Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Using the PWM (Pulse Width Modulation) Output
Basic Information for Open Loop Position Control Using Steppers or Servos
Instructions Created by the Position Control Wizard
Error Codes for the PTO Instructions
Features of the Position Module
Configuring the Position Module
Instructions Created by the Position Control Wizard for the Position Module
Sample Programs for the Position Module
Monitoring the Position Module with the EM 253 Control Panel
Error Codes for the Position Module and the Position Instructions
Advanced Topics
Understanding the RP Seek Modes Supported by the Position Module
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