Controllers
Parameter manual
b maXX
BM3000
Document no.: 5.12001.07
Baumüller Nürnberg GmbH
510
4.7
4.7.5.5 Sign-independent monitoring
By setting
Mode bit 2 the controller generates the absolute value of the actual
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:
At a positive edge of the two-level controller output the target parameter is changed as
follows:
Target parameter =
(target parameter
and not
(
bit_selection
))
OR (
bit pattern at high
AND
bit_selection
)
At a negative edge of the two-level controller output the target parameter is changed as
follows:
Target parameter =
(target parameter
and not
(
bit_selection
))
OR (
bit pattern at low
AND
bit_selection
)
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.
Parameter name
Meaning
Target parameter number out-
put
Target parameter number
Bit selection
Selection of the bits in the target parameter, which
have to be changed
Bit pattern at LOW output
Bit pattern, which is written in the target parameter at
controller output LOW.
Bit pattern at HIGH output
Bit pattern, which is written to target parameter at
controller output HIGH
