
PMAC2A PC104 Hardware Reference Manual
Connectors and Indicators
J1 – USB Communications Port
This connector provides access to the USB communications feature ordered through
J2 - Thumbwheel Multiplexer Port (JTHW Port)
The Thumbwheel Multiplexer Port, or Multiplexer Port, on the JTHW connector has eight input lines and eight output lines. The output lines can be used to multiplex large numbers of inputs and outputs on the port, and Delta Tau provides accessory boards and software structures (special
1.
2.Standard flat cable stranded
3.Phoenix varioface module type FLKM 26 (male pins) P/N 22 81 05 0
J7 - General-Purpose Digital Inputs and Outputs (JOPT Port)
1.
2.Standard flat cable stranded
3.Phoenix varioface module type FLKM 34 (male pins) P/N 22 81 06 3
J8 – Handwheel/Pulse and Direction Port (JHW / PD Port)
This port provides an extra encoder input or a set of pulse and direction outputs and its function is selectable by jumpers.
1.
2.Standard flat cable stranded
3.Phoenix varioface module type FLKM 10 (male pins) P/N 22 81 01 8
J10 – Ethernet Communications Port
This connector provides access to the Ethernet communications feature ordered through
TB1 – Power Supply Terminal Block (JPWR Connector)
In almost in all cases the PMAC2A PC/104 will be powered from the PC/104 bus when it is installed in a host computer’s bus, or from the JMACH1 connector. This terminal block may be used as an alternative power supply connector or to easily measure the voltages applied to the board.
1.
LED Indicators
D2: When this green LED is lit, it indicates that power is applied to the +5V input.
D6 – D7: These two LEDs monitor the operation of the Ethernet communications circuitry.
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