Description of the Software Modules and Parameters
Parameter manual b maXX BM5800
Document No.: 5.16029.03
603
of 814
3
n The set values have the format 16 Bit angle and 16 Bit revolution
Input channel is thereby Z136.3– Target position Bit 2 = 0
n The extrapolation with set value failure should be effective Bit 1 = 1
n The synchronization at activation of the operating mode must be deactivated Bit
0 = 0
Z136.2– Mode = 1102
hex
136.3 Target position
The parameter is a set value input for the position control (Operating mode -4). It is a po-
sition value in format 16 Bit revolution and 16 Bit angle.
This input is selected using parameter Z136.2– Mode bit 2 = 0.
The default setting for the cycle time for new set values is the fieldbus cycle time
(
Z131.18–). The specified position set value is then interpolated by the cycle time of the
cycle time of the set values to the control cycle.
With the "Weighting" function block (Z136.2– Mode bit 6 = 1) a modulo process, a
weighting as well as a load gear can be switched on. The input set value of the function
block is the result of the addition of Z136.3– Target position and
Z136.4– Position offset.
136.4 Position Offset
The parameter only acts as an offset when the input Z136.3– Target position has been
selected.
The offset value is added to the target position. This is an absolute position value and it
is also set regardless of the number of communication transmissions and always as an
absolute offset value for the target position. This means that if, for example, the same off
-
set value is set twice through communication it will not be added twice.
If the offset is not 0, then Z136.3– Target position and Z136.8– Output position set value
will deviate from each other by the offset value. When the offset is reset to 0, the output
position set value will correspond with the target position.
The format of the parameter is 16 Bit revolution and 16 Bit angle. However, in contrast to
Parameter
Z136.3– it has applied leading signs!
Activation of a new offset value:
In default mode (Z136.2– Mode bit 11 = 0) a newly set offset operates after the writing of
the main set value Z136.3–. target position. This way the effect of the new offset is syn-
chronized with the cyclically mapped main set value.
If the main set value is not cyclically set and the offset input must operate, then in
Z136.2– Mode the bit 11 must have been set. Then the current offset value is accepted
in every cycle of the fieldbus task. This parameterization makes sense when writing the
offset by set value generator or curve generator without cyclical mapping of the main set
value, for example.
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