BASIC commands
PROGRAMMING MANUAL
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3.2.221 OUTDEVICE
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3.2.222 OUTLIMIT
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3.2.223 OV_GAIN
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Type
Communication parameter
Syntax
OUTDEVICE
Description
The
OUTDEVICE
parameter defines the default output device. This device
will be selected for the
command when the
#n
option is omitted. The
OUTDEVICE
parameter is task specific. The supported values are listed in
the table below.
Value
Description
0
Programming port 0 (default)
1
RS-232C serial port 1
2
RS-422A/485 serial port 2
5
Trajexia Studio port 0 user channel 5
6
Trajexia Studio port 0 user channel 6
7
Trajexia Studio port 0 user channel 7
Arguments
N/A
Example
No example.
See also
,
INDEVICE
.
Type
Axis parameter
Syntax
OUTLIMIT
Description
The output limit restricts the demand output from a servo axis to a lower value
than the maximum. The value required varies depending on the maximum
demand output possible. If the voltage output is generated by a 16 bit DAC
values an
OUTLIMIT
of 32767 will produce the full +/-10v range. A MECHA-
TROLINK-II speed axis has a 32 bit maximum demand.
Note:
OUTLIMIT
only makes sense for Axis types using speed reference.
Arguments
N/A
Example
OUTLIMIT AXIS(1) = 16384
The above will limit the voltage output to a +/-5V output range from the TJ1-
FL02 unit. This will apply to the DAC command if SERVO=OFF, or to the volt-
age output by the servo loop if SERVO=ON.
See also
AXIS
,
S_REF
,
S_REF_OUT
,
SERVO
.
Type
Axis parameter
Syntax
OV_GAIN
Description
The
OV_GAIN
parameter contains the output velocity gain. The output veloc-
ity output contribution is calculated by multiplying the change in measured
position with the
OV_GAIN
parameter value. The default value is 0.
Adding NEGATIVE output velocity gain to a system is mechanically equivalent
to adding damping. It is likely to produce a smoother response and allow the
use of a higher proportional gain than could otherwise be used, but at the
expense of higher Following Errors. High values may cause oscillation and
produce high Following Errors.
Note: Negative values are normally required for OV_GAIN.
Note: In order to avoid any instability the servo gains should be changed only
when the
SERVO
is off.
Arguments
N/A
Example
No example.
See also
D_GAIN
,
I_GAIN
,
P_GAIN
,
VFF_GAIN
.