Siemens SIMATIC FM 452, Manual

Page: 151 / 210

Samples
12-5
FM 452 Electronic Cam Controller
C79000-G7076-C452-04
12.7 Sample Program 1 “GettingStarted”
Aim:
With this sample, you can put your cam controller into operation once you have
assigned parameters to it using the parameter assignment user interface based on
the “Getting Started” primer.
The sample extends the program shown in the “Linking in the User Program”
chapter of the primer by adding error evaluation.
Requirements:
You have assigned parameters for the cam controller as described in the
“Getting Started” primer.
The address of your module is entered correctly at the address MOD_ADDR in the
channel DB.
Startup:
In the startup OB (OB100) you call FC CAM_INIT that resets all the control and
return signals and the job management in the channel DB.
Cyclic Operation:
Open the variable table, establish the connection to the configured CPU and
monitor the variables. Transfer the prepared control values. The module changes
to the simulation mode. You can see how the actual value (CAM.ACT_POS) and
track signals (CAM.TRACK_OUT) change continuously.
Now change the simulation direction, specify different reference point coordinates,
turn off the simulation etc. by modifying and transferring the control values.