Settings
9-12
FM 452 Electronic Cam Controller
C79000-G7076-C452-04
Effects of the Setting
The FM 452 first shifts the on edge and then the off edge of the cam. This
sequence does not depend on the direction in which the cam is shifted.
Special situation:
Due to the sequence explained above, an inverse cam can result briefly if the new
cam start is higher than the old cam end.
CS
CE
CS
CE
150 mm
160 mm
=185 mm
150 mm
160 mm
=CE
old
CS
new
Before
calling
During the
call
After the
call
Figure 9-2
Changes in the Cam Edges in Individual Steps
Note
If a hardware interrupt has been enabled for this cam, the FM 452 can trigger one
or two hardware interrupts depending on parameter settings, when the inverse
cam is detected.
Changing the on and/or off edge can result in a cam edge or the entire cam being
skipped.
Note the switching response of time cams in Section 9.1, Page 9-2.
Cam status changes that would normally trigger a hardware interrupt can be lost.
Reading Out Modified Values
You can read out modified values with one of the jobs CAM1RD_EN to
CAM8RD_EN.
Canceling the Setting
The modified values are lost when you restart the module.
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 ...