PC104 View Datasheet(PDF) - PMD
Part Name
Description
MFG CO.
'PC104' PDF : 70 Pages View PDF
Operation
2
Connections & associated signals
DAC output enable is an internal function of the card. Thus there are no signals directly associated
with this function.
2.3.4 Serial Transceiver
This module and associated signals provides the capability to operate the Navigator-PC/104 card using
an asynchronous serial port, or to allow certain monitoring operations to be performed through the
serial port, even while the PC/104 bus is used to command motion sequences.
To operate the serial port as the primary communication channel to the card and disable the PC/104
interface, jumper mode should be set to the 2-3 position. To use the PC/104 bus for primary
communications, and allow the serial port to be used for certain diagnostic operations, ‘mode’ should
be set to 1-2 configuration. For a complete description of primary and diagnostic communication
modes, see Navigator Motion Processor User’s Guide. The following table shows the jumper options for
mode:
Jumper
Mode
Jumper
location
1-2
this is the default
setting of mode
2-3
Description
PC/104 bus is main communications channel,
serial port can be used in diagnostic mode.
PC/104 bus is disabled, serial port is primary
communication channel.
The serial port can be operated at various baud rates from 1,200 to 416,667, and different configurations
of stop, start, and parity codes. In addition, three connection modes are provided, point-to-point,
multi-drop (address bit mode), and multi drop (idle line mode). The Navigator commands
SetSerialPortMode and GetSerialPortMode are used to set, and read back, the serial port communica-
tion parameters. A complete description of the serial port, and its usage modes is provided in the
Navigator Motion Processor User’s Guide. A complete description of Navigator commands can be found
in the Navigator Motion Processor Programmer’s Command Reference.
When operated in the serial-only mode (mode set to 2-3) the card will power-up with a default serial
communications parameters set of 9600 baud, no parity, one stop bit, and point to point mode. To
alter these parameters in serial-only mode, the user should set new desired serial port parameters
using the SetSerialPortMode command, while communicating at the default parameters, and then
switch to the new communications parameters.
Connections & associated signals
A special 6-pin connector is used to connect to the serial port. It is also possible to order a convenient
cable with this connector installed, Cable-4003. See section 1.2 Accessory Products, page 9. Section 5.2.8, Serial I/F
Connector, page 63, provides a detailed signal description of the serial I/F connector.
For a complete description of the pinout connections to/from the card, see section 5, Navigator-PC/104
Electrical Reference, page 55.
Navigator-PC/104 User’s Guide
27
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