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Operation
Prodigy/CME PC/104 User’s Guide
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2
Note that all of these functions are handled automatically by the Prodigy/CME card’s TCP processing system, and
should in turn also automatically be handled by the host’s TCP system. No user action is required to initiate or mon-
itor these automatic TCP ‘keep-alive’ messages.
To change the default value of the keep-alive idle time a Set command is sent to the Device resource. A value of 0
indicates that the keep-alive mechanism should be disabled.
For detailed information on PRP action formats and function, refer to the Prodigy/CME Programmer’s Reference .
2.5.4.2 Ethernet status LED
Using Figure 1-1 on page 15 two Ethernet status LEDs are locatable, one amber in color, and one grey in color. These
LEDs provide information on the status of the Ethernet link. A solid green LED indicates that a link exists (there is
a transceiver connected on the ‘other side’ of the connection, and a blinking green LED means that data is being
transmitted. The Amber LED indicates that a 100 Mbps (mega bits per second) network is in use. No Amber LED
indicates that the network is at 10 Mbps.
2.5.4.3 Connections & associated signals
The Ethernet connector is a 10-pin dual header and is located at J24.
2.5.5 Cable Connections
The serial, CANbus, and Ethernet connectors of the Prodigy/CME PC/104 card are dual header style, which are
suitable for connection to converters for use in a typical PC/104 chassis frame, however they are not suitable for
directly connecting to typical serial, CANbus, and Ethernet networks. PMD provides a number of cable options to
accomplish this conversion either during prototyping, or for your production products. The subsequent sections detail
typical cable connections for these networks.
2.5.5.1 RSR232 serial cable connections
Serial 1 and Serial 2 may be accessed using PMD’s off-the-shelf cable accessories. Cable-4301-01.R has a 10-pin header
that plugs into the Prodigy/CME PC/104 Serial Connector (J17) and converts to a single female DB-9 output with
dual serial signals. Cable-4355-01.R is a “Y” cable that plugs into this cable, and converts to two DB-9 connectors
suitable for connection to a PC serial port or USB-to-serial converter.
2.5.5.2 CANbus cable connections
The Prodigy/CME’s CANbus port may be accessed using PMD’s off-the-shelf cable accessories. Cable-4701-01.R has
an 8-pin header that plugs into the Prodigy/CME PC/104 CANbus Connector (J16) and converts to an RJ45 output.
This RJ45 then plugs into Adapt-RJ45T-01.R, which is a small splitter that duplicates the CANBus RJ45 connections
into two identical RJ45 connectors.
Cable-RJ45-02-R is a standard straight-thru RJ45 cable that plugs into a network socket. If additional nodes will be
added then no terminator is used. If this node will be the last node on the CANbus network, TRM-RJ45-02.R should
be inserted into one of the two RJ45 sockets.
2.5.5.3 Ethernet cable connections
The Ethernet port may be accessed using PMD’s off-the-shelf cable accessories. Cable-4505-01.R has a 10-pin header
that plugs into the Prodigy/CME PC/104 Ethernet Connector (J15) and converts to an RJ45 output. This cable can
then be directly plugged into the Ethernet network socket.