Siemens S7-300 Operating Instructions Manual page 98

Machine and cam data
9.14 Cam data
No.
5 A cam is approached from any direction, and
exited into any direction; both directions are set
as effective direction
Assigned cam
Switched cam
Cam data in the parameter DB
Address
relative
+0.0
+0.1
+0.2
+0.3
+0.4
+0.5
+1.0
Effective direction
Two effective directions are supported:
positive: The cam is activated at the cam start, if the axis is moving in the direction of increasing
actual values.
negative: The cam is activated at the cam end, if the axis is moving in the direction of decreasing
actual values.
You may set both effective directions in parallel.
Track number
You define the track controlled by the cam by setting the track number.
Note
Unused cams should always be set "invalid" (CAMVALID = FALSE).
98
Description
Name
CAMVALID BOOL
EFFDIR_P BOOL
EFFDIR_M BOOL
CAM_TYPE BOOL
PI_SW_ON BOOL
PI_SW_OFF BOOL
TRACK_NO BYTE
Position-based cam
Type Initial value
FALSE
TRUE
TRUE
FALSE
FALSE
FALSE
B#16#0
Operating Instructions, 05/2011, A5E01071724-03
Time-based cam
Comment
1 = cam valid
1 = positive effective direction (plus)
1 = negative effective direction
(minus)
0 = position-based cam
1 = time-based cam
1 = hardware interrupt on activation
1 = hardware interrupt on
deactivation
Track number
Range: 0 to 31
FM 352 electronic cam controller