A positioning controller with the FM 353 features the following essential components:

• FM 353:
  • For positioning an axis with stepper motor
• FM STEPDRIVE:
  • Power activation for stepper motors
• S7-300 CPU:
  • For sequence control
  • For starting and stopping positioning actions
• Programming device:
  • For programming the STEP 7 program
  • For parameterizing the FM 353 with STEP 7 via parameterization screen forms
  • For testing and startup
• Operator panel:
  • For operator control and monitoring of the machine
  • For error diagnostics

FM 353 and CPU are linked via technology blocks.