Technical data

Configuration
CPU 317T: Technology Functions
A5E00251798-03
4-105
HW address
The cam is assigned to one output only. This may be an integrated digital output of
the Technology CPU, a digital output on DP(DRIVE), for example at an ET 200
station, or an output in a TM15 or TM17 High-Feature module.
Several cams can be connected to the same output.
The switching accuracy of the cam is determined by :
• The accuracy of I/O output,
• The priority of the cam in the system cycles,
• The compensation of constant delay times.
Logical operation
In the Cams > Configuration dialog box, you can determine whether to
interconnect the cam with the output by means of a logical AND or OR operation.
As a result, all cams are ORed at the output, and are then logically linked by an
AND operation.
Two ORed cams:
100 µ m 105 µ m 110 µ m
s
Cam 1
Cam 2
Output
4.8.3 Highspeed cams
In order to enhance cam switching accuracy, enable the "High-speed cams"
function in the Cams > Configuration dialog box.
Only the integrated outputs of the Technology CPU or the outputs of a TM15 or
TM17 High Feature modules can be used as high-speed cam outputs, because
these are supported by internal HW functions. High-speed cams configured for
other modules on DP(DRIVE) are processed as "standard" cams.
The cams are calculated based on the IPO cycle or on the position controller cycle;
High-speed cams should always be calculated based on the position controller
cycle. Cam signal output is controlled by means of the position control cycle.