Description Of The Parameter Data - Siemens SIMATIC CM35 Manual

Positioning Operating mode
8.2.1

Description of the Parameter Data

Edge evaluation
and direction of
rotation
Setting an actual
value
8-8
When you make specifications for the edge evaluation, you determine
whether only the edges of encoder track A are evaluated or the edges of both
encoder tracks.
Single evaluation:
Double evaluation:
Quadruple evaluation:
The parameterized edge evaluation applies to all axes.
The direction of rotation can be inverted with a parameter bit. The parame-
terized direction of rotation applies to all axes.
Table 8-1 Parameterizing the edge evaluation
Variable: Parame-
Edge Evaluation ter Block
Encoder_Evaluation 1
You can specify an actual value for ²set actual value² to synchronize the ac-
tual value acquisition of an axis. To do this, the axis must be moved to the
position with the coordinate of the actual value.
Actual values are entered in the parameter blocks in twos complement repre-
sentation.
- - 2,147,483,648
8000 0000... ..FFFF FFFF..
Specification of the actual value for ²set actual value² is axis- - specific.
All falling edges of encoder track A
All edges of encoder track A
All edges of both encoder tracks
Sub- Off- Data
num- set Type
ber
Edge evaluation
0 2.0 Bool 2#xxxx_xx00:
2.1 Bool 2#xxxx_xx01:
2.2 Bool 2#xxxx_xx10:
Direction of rotation:
2.7 Bool 2#0xxx_xxxx:
2#1xxx_xxxx:
-1 0 +1
..0.. ..1..
(4) J31069-D0416-U001-A5-7618
Value Range
Single
Double
Quadruple
Inverted
Not
inverted
+ 2,147,483,647
..7FFF FFFF
CM35 Counter Module