Motion control C3F_T40
292 192-121102 N04 June 2008
5.11.3. Objects of the cam switching mechanism
Object designations Units Objects for serial cams Objects for fast cams Valid
after:
Source
="1": Actual position
="2": Setpoint position
="3": virtual Master
="5": Master position (3030.1)
Cam 0:
...
Cam 31:
O3730.1
...
O3761.1
Cam 0:
...
Cam 3:
O3710.1
...
O3713.1
VP*
Switching-on position
defined unit
for
positions
Cam 0:
...
Cam 31:
O3730.2
...
O3761.2
Cam 0:
...
Cam 3:
O3710.2
...
O3713.2
VP*
Switching-off position
defined unit
for
positions
Cam 0:
...
Cam 31:
O3730.3
...
O3761.3
Cam 0:
...
Cam 3:
O3710.3
...
O3713.3
VP*
Switch-on anticipation
1 ≡ 500μs
Cam 0:
...
Cam 31:
O3730.4
...
O3761.4
Cam 0:
...
Cam 3:
O3710.4
...
O3713.4
Imme
diately
Switch-off anticipation
1 ≡ 500μs
Cam 0:
...
Cam 31:
O3730.5
...
O3761.5
Cam 0:
...
Cam 3:
O3710.5
...
O3713.5
Imme
diately
Output
(the given object bit contains the
cam switch status for further use)
Cam 0:
...
Cam 15
Cam 16
...
Cam 31:
O3701.3 Bit 0
...
O3701.3 Bit15
O3701.5 Bit 0
...
O3701.5 Bit15
Cam 0:
...
Cam 3:
O3700.3 Bit 0
...
O3700.3 Bit 3
Imme
diately
Enable
Cam 0:
...
Cam 15
Cam 16
...
Cam 31:
O3701.2 Bit 0
...
O3701.2 Bit15
O3701.4 Bit 0
...
O3701.4 Bit15
Cam 0:
...
Cam 3:
O3700.2 Bit 0
...
O3700.2 Bit 3
Imme
diately
Hysteresis
defined unit
for
positions
With source = actual position: O3705.1
With source = Master position: O3705.5
VP*
The exact description of the objects can be found in the object directory (see
page 414).
The co
mmand VP (set objects to valid) can be executed as
global VP – for all objects or
selective VP – only objects of the cam switching mechanism -
Global VP: Write into object 210.11 with value <> 0
Selective VP: Write into object 210.9 with value <> 0
(C3Plus.ValidParameter_CamControlledSwitches:=True)
The selective VP is executed faster and constitutes a smaller temporal strain!
Scheme of the object assignment example of the serial cam 0