Performance Motion Devices PR8358120, User Manual

Page: 54 / 103

Operation
54
Prodigy/CME PC/104 User’s Guide
2
2.7.4.1 Connections & associated signals
Both single-ended and differential line driver versions of these signals are output from the Prodigy/CME PC/104
card. There are no associated connections required for these signals to function properly, however, one or more of the
digital grounds must be connected. See Chapter
4, Electrical Reference , on page 69 for a complete description of the
pinout connections to and from the card.
2.7.5 PWM Out
For DC brush, brushless DC or microstepping motors, these signals provide PWM (pulse width modulated) motor
command signals when the motor output mode is set to
PWMSignMagnitude
or
PWM5050Magnitude
. The
number of signals per axis varies, depending on factors such as the motor type, the number of phases of the motor,
and the motor drive method (sign/magnitude or 50/50). See Chapter
4, Electrical Reference , on page 69 for complete
connection tables for various motor configurations.
These signals are named PWMMag1A-4C (12 signals) and PWMSign1A-4B (8 signals).
2.7.5.1 Connections & associated signals
These signals are generated by the Magellan Motion Processor. There are no associated connections required for
these signals to function properly, however, one or more of the digital grounds must be connected. See Chapter
4,
Electrical Reference , on page 69 for a complete description of the pinout connections to and from the card.
2.7.6 DAC Out
For DC brush, brushless DC or microstepping motors, this is the analog motor command when the motor output
mode is set to DAC Offset Binary (digital-to-analog converter). These signals are named
DAC1A - DAC4B (8 signals),
and vary between -10V and +10V. The number of signals per axis depends upon the motor type. See Section 4.5,
“Environmental and Electrical Ratings,” on page 85 and the Magellan Motion Processor User’s Guide for more information.
2.7.6.1 Connections & associated signals
For analog voltages to be output correctly, AGND (motor command ground) must be connected. See Chapter 4, Electrical
Reference , on page 69 for a complete description of the pinout connections to and from the card.
2.8 Software Libraries
PMD provides software libraries in C/C++ as well as Visual Basic to access all of the functions provided by the
Prodigy/CME PC/104 cards. In addition, a special library of commands is used to access Magellan Motion Processor
functions called VB-Motion, and C-Motion.
The Prodigy/CME Programmer’s Reference , in addition to providing detailed format and function descriptions of the PRP
messages associated with the Prodigy/CME PC/104 cards, also provides the equivalent C and Visual Basic library
calls. There is often, but not always, a direct correspondence between PRP messages and C language software
commands as they will be used for user application code to be executed in the host controller, or in the C-Motion
Engine.