Performance Motion Devices PR8358120, Руководство пользователя

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Operation
50
Prodigy/CME PC/104 User’s Guide
2
2.6 General Card Functions
2.6.1 Connection Check
When sent to the Device resource, this PRP action NOP performs a basic connection check to the Prodigy/CME
PC/104 card. A return without a PRP error code indicates that the Prodigy/CME PC/104 card is accessible and
processing commands.
2.6.2 Reset
Although a reset occurs automatically during power-up, it is sometimes desirable to reset the Prodigy/CME PC/104
card explicitly through a user-initiated command or action. This can be done in one of two ways. The first is via the
PRP action
Reset sent to the Device resource. The second method is via the external signal Reset , located at pin 91 of
the GP Connector.
After a card reset occurs the Magellan Motion Processor and the C-Motion Engine modules will be reset, and many
of the Prodigy/CME PC/104 card’s output signals will be driven to known states. These are summarized in the
following table:
In addition, upon a card reset all card default parameters are reloaded. See Section 2.6.3, “Setting Card Defaults,” on
page 50 for more information on default values.
2.6.2.1 Connections & associated signals
The reset feature has an external signal input, Reset , associated with it. This active low signal is located on pin 91 of
the GP Connector. It is pulled up through a 4.7 kOhm resistor to 5 V. In addition, all of the signals in the table above
are affected by a card reset.
2.6.3 Setting Card Defaults
There are a number of user-settable parameters that are saved by the card in non-volatile RAM, and that are utilized
after a power up, or after a card reset. The following table shows these parameters, and provides the initial factory
default values:
Signal Name State
AxisOut1-4 High
PWMMag1A-4C Low
PWMSign1A-4B Low
DAC1A-DAC4B 0.0 volts
DigitalOut0-7 Low
AmpEnable1-4 Low
DAC On/Off Off
Watchdog Timer Disabled
Parameter Factory default value
Ethernet Communications
IP Address
192.168.2.2
Net Mask 255.255.255.0
Gateway 0.0.0.0
PRP Port 40100
Serial Communications
Serial 1 settings
57600, no parity, 8 data bits, 1 stop bit
Serial 2 settings 115200, no parity, 8 data bits, 1 stop bit