Technological Functions of the S7-400
4-7
Automation System S7-400 Configuration and Use
A5E0044271 1-02
4.5 Cam Controlling with the FM 452
Introduction
The FM 452 is an electronic cam controller that triggers functions based on
position or time. It provides the following features to relieve the load on the CPU:
• Setting and resetting of electronic cams based on actual values
Functions of the FM 452
The FM 452 provides you with the following functions:
• Position-based cam controlling
• T ime-based cam controlling
Each can be implemented as a position or time cam. You can optionally configure
two counter cam tracks and one brake cam track.
Performance characteristics of the FM 452
The FM 452 has the following performance characteristics:
• Number of axes:
-- 1 linear or rotary axis
• Number of cams
-- Configurable, 16, 32, 64 or 128
• Inputs and outputs
-- 11 digital inputs, 8 of these enable inputs
-- 16 digital outputs as cam tracks
• Connectable encoders:
-- Incremental encoder 5 V differential signal, symmetrical
-- Incremental encoder with 24 V signal, asymmetrical
-- SSI absolute encoder
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