UMAX130511 Version 1.00A Preliminary Documentation
– May be subject to change
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Figure 16 shows the difference between these two response profiles with the default settings.
Figure 16
– Lookup Table Defaults with Ramp and Step Responses
Lastly, any point except (1,1) can be selected for an
‘Ignore’
response. If
LTz Point Response
sub-index N
is set to ignore, then all points from (X
N
, Y
N
) to (X
11
, Y
11
) will also be ignored. For all
data greater than X
N-1
, the output from the lookup table function block will be Y
N-1.
A combination of
‘Ramp To’
,
‘Jump To’
and
‘Ignore’
responses can be used to create an
application specific output profile. An example of where the same input is used as the X-Axis for
two tables, but where the output profiles ‘mirror’ each other for a deadband joystick response is
shown in Figure 17. The example shows a dual slope percentage output response for each side of
the deadband, but additional slopes can be easily added as needed.
(Note: In this case, since the
analog outputs are responding directly to the profile from the lookup tables, both would have object
2342h AO Control Response set to a ‘Single Output Profile.’)
Figure 17
– Lookup Table Examples to Setup for Dual-Slope Joystick Deadband Response