Table of Contents
Advertisement
Chapter 4
Functional Overview
øA
øB
Index
Optional
Refer to the NI-Motion User Manual for information about configuring axes.
Note
Motion Resources
NI 7340 User Manual
32-Bit
Encoder
0101011101101
Interface
101100111
Trajectory
Generator
øA
32-Bit
Encoder
01011010
Interface
Index
The 7340 supports axes with secondary output resources, such as DACs for
servo axes or stepper outputs. Defining two output resources is useful when
controlling axes with multiple motors, such as gantry systems in which
two DAC outputs can be configured with different torque limits and/or
offsets.
The 7340 controller also supports secondary feedback resources, called
encoders, for axes defined as servo. Two feedback resources are used when
implementing dual-loop control, such as in backlash compensation,
which reduces the number of encoders available for other axes.
Encoder, DAC, ADC, and motion I/O resources that are not used by an axis
are available for non-axis or nonmotion-specific applications. You can
directly control an unmapped DAC as a general-purpose analog output
(±10 V). Similarly, you can use any ADC channel to measure
potentiometers or other analog sensors.
101100111
PID
Servo
11101101100
Converter
Loop
Figure 4-1. Servo Axis Resources
101100111
Stepper
010010110
Control
Loop
101100111
Figure 4-2. Stepper Axis Resources
4-4
16-Bit
D/A
±10 V
Stepper
Pulse
Generator
ni.com
Advertisement
Table of Contents
