N3: Software Cams, Position Switching Cycles - Only 840D Sl; Brief Description - Siemens SINUMERIK Series Function Manual

N3: Software cams, position switching cycles - only
840D sl
8.1

Brief Description

Function
The "Software cams" function generates position-dependent switching signals for axes that
supply an actual position value (machine axes) and for simulated axes.
These cam signals can be output to the PLC and also to the NCK I/Os.
The cam positions at which signal outputs are set can be defined and altered via setting
data. The setting data can be read and written via HMI, PLC and part program.
Activation
The "Software cams" function can be activated and used in all operating modes. The
function remains active in the event of reset or Emergency Stop.
Field of application
Output cam signals can be used, for example:
● To activate protection zones
● To initiate additional movements as a function of position
● As reversing signals for hydraulically controlled oscillation axes
Axis types
Software cams can be used on linear and modulo rotary axes that are defined as machine
axes.
Cam range/cam pair
Cams are always assigned in pairs to axes. A pair consists of a plus and a minus cam. 32
cam pairs are available.
The plus and minus cams each simulate a mechanical cam which is actuated at a defined
point (cam position) in a specific approach direction when the axis reaches the cam position.
Cam ranges are assigned to the plus and minus cams as follows:
• Cam range plus:
• Cam range minus:
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
All positions ≥ plus cam
All positions ≤ minus cam
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