Siemens SIMATIC CM35, Руководство пользователя

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8-8
CM35 Counter Module
(4) J31069-D0416-U001-A5-7618
8.2.1 Description of the Parameter Data
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: All falling edges of encoder track A
Double evaluation: All edges of encoder track A
Quadruple evaluation: All edges of both encoder tracks
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:
Edge Evaluation
Parame-
ter Block
Sub-
num-
ber
Off-
set
Data
Type Value Range
Encoder_Evaluation 1 0 2.0
2.1
2.2
2.7
Bool
Bool
Bool
Bool
Edge evaluation
2#xxxx_xx00: Single
2#xxxx_xx01: Double
2#xxxx_xx10: Quadruple
Direction of rotation:
2#0xxx_xxxx: Inverted
2#1xxx_xxxx: Not
inverted
You can specify an actual value for
²
set actual value
²
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 -1 0 +1 + 2,147,483,647
8000 0000... ..FFFF FFFF.. ..0.. ..1.. ..7FFF FFFF
Specification of the actual value for ² set actual value ² is axis--specific.
Edge evaluation
and direction of
rotation
Setting an actual
value
Positioning Operating mode