A controller with the FM 452 features the following essential components:

• FM 452:
  • For position-dependent control commands by setting of outputs
• S7-400 CPU:
  • For sequence control
  • For starting and stopping monitoring actions
• Programming device:
  • For programming the STEP  7 program
  • For parameterizing the FM 452 with STEP 7 via parameterization screen forms
  • For testing and startup
• Operator panel:
  • For operator control and monitoring of the machine
  • For error diagnostics