Technical data

Technology functions
CPU 317T: Technology Functions
6-196 A5E00251798-03
6.5 Technology functions - Cams, measuring sensors,
external encoders
6.5.1 FB 430 MC_CamSwitch - Position-based cam
Purpose
• Using the "MC_CamSwitch" technology function you can enable / disable
position-based cams or switching cams, and define their switching
characteristics.
• In your cam configuration, you can define whether the switching positions are
based on setpoints or actual values.
• Switching points can be advanced or retarded (derivative time and deactivation
time). Here, the time unit set in S7T Config applies to the axis.
• The current switching state of the cam is stored in the technology DB.
Applicable to
• Position-based cam
• Switching cams
Overriding commands
An MC_CamSwitch command can only be canceled by a further MC_CamSwitch
command to the same technology object. An MC_CamSwitch command does not
cancel any other commands.
Input parameters
Parameter Data type Start value Description
CamSwitch INT 0 Number of the technology DB
Execute BOOL FALSE Operating state transition at the positive edge
OnPosition REAL 0.0 Switch-on position
OffPosition REAL 0.0 OFF position (applies to position-based cams)
Hysteresis REAL 0.0 Hysteresis
Delay REAL 0.0 Time-based offset of the switching points (Derivative
time)
Value < 0: Advanced switching
Value > 0: Delayed switching