Configuring The Position Module - Siemens SIMATIC S7-200 System Manual

Configuring the Position Module

You must create a configuration/profile table for the Position module in order for the module to
control your motion application. The Position Control wizard makes the configuration process
quick and easy by leading you step-by-step through the configuration process. Refer to the
Position
Advanced Topics on page 294 for detailed information about the configuration/profile table.
Control
The Position Control wizard also allows
you to create the configuration/profile
table offline. You can create the
configuration without being connected to
an S7-200 CPU with a Position module
installed.
To run the Position Control wizard, your
project must have been compiled and
set to symbolic addressing mode.
To start the Position Control wizard,
either click the Tools icon in the
navigation bar and then double-click the
Position Control Wizard icon, or select Position Control Wizard icon, or select
the Tools> Position Control Wizard
menu command.
To configure the Position Control Module use the Position Control wizard. Select the option to
configure the EM 253 Position Control Module.
Enter location of module
Specify the module slot position (module 0 to module 6). If STEP 7--Micro/WIN is connected to the
PLC, you only have to click the Read Modules button. For an S7-200 CPU with firmware prior to
version 1.2, the module must be installed next to the CPU.
Select type of measurement
Select the measurement system. You can select either engineering units or pulses. If you select
pulses, no other information is required. If you select engineering units, the number of pulses
required to produce one revolution of the motor (refer to the data sheet for your motor or drive),
the base unit of measurement (such as inch, foot, millimeter, or centimeter), and the distance
traveled in one revolution of the motor.
STEP 7--Micro/WIN provides an EM253 Control Panel that allows you to modify the number
-
of units per revolution after the Position module has been configured.
If you change the measurement system later, you must delete the entire configuration
-
including any instructions generated by the Position Control wizard. You must then enter
your selections consistent with the new measurement system.
Open Loop Motion Control with the S7-200
Figure 9-10 Position Control Wizard
Chapter 9
267