Performance Motion Devices PR8358120, Руководство пользователя

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Operation
36
Prodigy/CME PC/104 User’s Guide
2
2.2.2 Connections & Associated Signals
The Prodigy/CME PC/104 card’s Magellan Motion Processor has extensive signal connections associated with it to
allow interfacing to various motion peripherals. See the
Magellan Motion Processor User’s Guide as well as Section 2.7,
“Signal Processing and Hardware Functions,” on page 52 for a complete description of the signals managed by the
Magellan Motion Processor.
2.3 Magellan-Controlled Functions
There are a number of motion control hardware features on the Prodigy/CME PC/104 card that are controlled
through the Magellan Motion Processor, but are not located within the Magellan Motion Processor itself. Because of
this they are not specifically described in the
Magellan Motion Processor User’s Guide , or the Magellan Programmer’s Command
Reference , instead being described here, in subsequent sections.
These Magellan-controlled card functions are:
• General Purpose Digital I/O
• Amplifier Enable
• DAC Output Enable
• Watchdog Timer
• Undervoltage Monitor
• Reset Monitor
• Card ID
• Dual-Port Trace & Profile RAM
These motion hardware control functions are accessed via the Magellan’s
ReadIO
and
WriteIO
commands, which
provide control of hardware peripherals external to the Magellan Motion Processor. In addition, many of the Prodigy
card motion hardware control functions can be accessed using VB-Motion and C-Motion ‘named’ commands specific to
that function. See the subsequent feature-specific sections for a description of both access methods.
The ReadIO and WriteIO commands are similar to any other Magellan packet commands in that they are accessed
via the PRP action
Command
. See Section 2.2.1, “Accessing the Magellan Motion Processor,” on page 35 for detailed
information.
2.3.1 General-Purpose Digital I/O
In addition to numerous special-purpose digital signals which are input or output to the card, and which are directly
processed by the Magellan Motion Processor such as
AxisIn, AxisOut, Home, and QuadA , the Prodigy/CME PC/104 cards
also support eight general-purpose inputs, and eight general-purpose outputs. These signals provide a convenient way of
accessing additional application-specific general-purpose digital I/O.
The general purpose digital inputs are TTL-compatible with typical input range of 0~5.5V. The absolute maximum
input range is -0.5~7V.
The general purpose digital outputs are 5V TTL-compatible with an output sink/source current of 24mA.