Basics of Cam Control
2-6
FM 452 Electronic Cam Controller
C79000-G7076-C452-04
2.2.2
Special Tracks
Definition
By setting the relevant parameters, you can set tracks 0 to 2 as special tracks, as
follows:
•
Track 0 or 1: Counter cam track
•
Track 2: Brake cam track
Requirements
The following requirements must be met to allow the use of the special tracks:
•
Cams are assigned to the track
•
Cam processing is active
•
The relevant track is enabled
•
The track is selected as a special track
Counter Cam Track
A counter cam track counts the status changes of the track results on this track.
You must specify a value for the counter and start the counter function.
Each rising edge of the track result decrements the counter value of the relevant
track by 1.
As long as the counter value for the counter cam track is higher than 0, the track
flag bit remains 0.
Once the counter value reaches the value 0, the track flag bit is set and, if selected
in the parameter settings, the track signal is set (see Figure 2-4, page 2-11).
At the next falling edge of the track result (all cams on this track are off), the track
flag bit is cleared again and the counter is reset to the specified value.
Cam
Track 0
3
2
1
0
3
Counter reading 4
4
The maximum counter value set in the machine data is 4
Track flag bit
Figure 2-2
Switching a Counter Cam Track
Содержание SIMATIC FM 452
Страница 8: ...Contents viii FM 452 Electronic Cam Controller C79000 G7076 C452 04 ...
Страница 14: ...Product Overview 1 6 FM 452 Electronic Cam Controller C79000 G7076 C452 04 ...
Страница 28: ...Installing and Removing the FM 452 3 2 FM 452 Electronic Cam Controller C79000 G7076 C452 04 ...
Страница 36: ...Wiring the FM 452 Electronic Cam Controller 4 8 FM 452 Electronic Cam Controller C79000 G7076 C452 04 ...
Страница 38: ...Installing the Software 5 2 FM 452 Electronic Cam Controller C79000 G7076 C452 04 ...
Страница 62: ...Programming the FM 452 6 24 FM 452 Electronic Cam Controller C79000 G7076 C452 04 ...
Страница 68: ...Putting the FM 452 into Operation 7 6 FM 452 Electronic Cam Controller C79000 G7076 C452 04 ...
Страница 130: ...Settings 9 32 FM 452 Electronic Cam Controller C79000 G7076 C452 04 ...
Страница 140: ...Encoders 10 10 FM 452 Electronic Cam Controller C79000 G7076 C452 04 ...
Страница 146: ...Diagnostics 11 6 FM 452 Electronic Cam Controller C79000 G7076 C452 04 ...
Страница 162: ...Samples 12 16 FM 452 Electronic Cam Controller C79000 G7076 C452 04 ...
Страница 168: ...Technical Specifications A 6 FM 452 Electronic Cam Controller C79000 G7076 C452 04 ...
Страница 174: ...Connection Diagrams B 6 FM 452 Electronic Cam Controller C79000 G7076 C452 04 ...
Страница 200: ...Data Blocks Error Lists C 26 FM 452 Electronic Cam Controller C79000 G7076 C452 04 ...