
TMCM-1310 TMCL Firmware V1.11 Manual (Rev. 1.16 / 2014-MAR-19)
85
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XIS PARAMETERS RELATED TO POSITIONING MAINTENANCE AND STANDSTILL MODE
Number Axis parameter
Description
Units / Default
Acc.
8
Target pos.
reached
Indicates that the actual position equals the
target position.
0/1
R
134
CL position
reached window
Window around the target position in which
the target position will be considered as
being reached. This value should be adjusted
to the application and the resolution of the
encoder.
If the actual position is within the target
reached window for at least or longer than
defined by axis parameter 135, the
position_reached
flag will be set.
0… 255
[encoder steps]
Default = 50
RW
135
CL position
reached time
Minimum duration the motor must be within
the target reached window (axis parameter
134) before the position will be considered
as reached and
position_reached
flag will be
set.
0… 131072
Default = 100
[1/10 ms]
RW
136
CL standstill
position error
gain
When the target position is reached, the
velocity regulation will be switched off and
the system is in a special standstill mode. In
this mode, the position is hold and
maintained as long as the position error is
within the range of the standstill error limit
(axis parameter 138) around the target
position.
This parameter is a gain factor for the
position error used for position maintenance
in standstill mode.
-
A value of 20 typically provides good
results.
-
Higher values provide higher stiffness.
-
For values greater than 25 a dampening
factor > 0 (axis parameter 137) should be
used as well to prevent from
oscillations.
10… 50
Default = 10
RW
137
CL standstill
position error
dampening
factor
When the target position is reached, the
velocity regulation is switched off and the
system is in a standstill mode where the
position is hold and maintained as long as
the position error is within the range of the
standstill error limit (axis parameter 138)
around the target position. Parameter 137 is
a dampening factor to prevent from
oscillations when using a high proportional
gain (axis parameter 136).
-
When axis parameter 136 is between 10
and 20, this parameter can be 0.
-
For higher proportional gain, e.g., 30, a
dampening factor of 20 is a good
starting value.
0… 65535
Default = 0
RW