Sign-Independent Monitoring; Linking Of The Controller Output With The Target Parameter - Baumuller b maXX BM3000 Operating Manual

4.7
Controllers

4.7.5.5 Sign-independent monitoring

By setting
value and compares this with the thresholds which accordingly must be positive. Applica-
tion for this purpose e. g. speed monitoring (independent of positive and negative rota-
tional direction).

4.7.5.6 Linking of the controller output with the target parameter

The output of the two-level controller can directly be used to change a writable controller
parameter. This method is related to that of the digital inputs. All cyclic writable parame-
ters can be used as a target parameter.
When switching off a two-level controller the bit pattern at the output is not changed.
A change of the bit masks or values affects at next switching of the two-level controller.
Meaning of the linking parameters:
Parameter name
Target parameter number out-
put
Bit selection
Bit pattern at LOW output
Bit pattern at HIGH output
At a positive edge of the two-level controller output the target parameter is changed as
follows:
Target parameter =
At a negative edge of the two-level controller output the target parameter is changed as
follows:
Target parameter =
If an error occurs at writing to the target parameter (e. g. value greater than the maximum
value or smaller than the minimum value), by the controller an according error message
occurs.
510 Parameter manual b maXX BM3000
Document no.: 5.12001.07
of 820
Z151.1–
Mode bit 2 the controller generates the absolute value of the actual
Meaning
Target parameter number
Selection of the bits in the target parameter, which
have to be changed
Bit pattern, which is written in the target parameter at
controller output LOW.
Bit pattern, which is written to target parameter at
controller output HIGH
(target parameter and not (bit_selection))
OR (bit pattern at high AND bit_selection)
(target parameter and not (bit_selection))
OR (bit pattern at low AND bit_selection )
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