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DMM-0200 Product User Guide
159 Swanson Road
Boxborough, MA 01719
Tel: 508-475-3400
Email: sales@dovermotion.com
Summary of Joystick Control Parameters
X-axis maximum joystick speed at 5000 mV and 0 mV
Y-axis maximum joystick speed at 5000 mV and 0 mV
X-axis maximum speed change
Y-axis maximum speed change
X-axis zero tolerance range for analog input
Y-axis zero tolerance range for analog input
X-axis negative outer limit
X-axis negative inner limit
X-axis positive inner limit
X-axis positive outer limit
Y-axis negative outer limit
Y-axis negative inner limit
Y-axis positive inner limit
Y-axis positive outer limit
Table 28 Summary of Joystick Control Parameters
To enable/disable joystick control for an axis, use the JE command. Joystick enable parameter is a 2 bit value.
For example, joystick enable value of 3 means joystick feature is enabled on both axes.
Note: If joystick control is enabled, StepNLoop is automatically disabled.
StepNLoop Closed Loop Control
PMX-2EX-SA features a closed-loop position verification algorithm called StepNLoop (SNL). The algorithm
requires the use of an incremental encoder.
SNL performs the following operations:
1) Position Verification: At the end of any targeted move, SNL will perform a correction if the current
error is greater than the tolerance value.
2) Delta Monitoring: The delta value is the difference between the actual and the target position. When
delta exceeds the error range value, the motor is stopped and the SNL Status goes into an error state.
Delta monitoring is performed during moves – including homing and jogging. To read the delta value,
use the DX command.
See Control for a list of the SNL control parameters.
†Ratio between motor pulses and encoder counts.
This ratio will depend on the motor type, micro-
stepping, encoder resolution and decoding multiplier.
Value must be in the range [0.001 , 999.999].
Maximum error between target and actual position that
is considered “In Position”. In this case, no correction
is performed. Units are in encoder counts.
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