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C-1
C: Pinouts
In the following diagrams, unlabeled pins are not connected.
Ethernet Connectors
The MSS uses a standard Ethernet pinout. The figure below shows the MSS RJ45 Ethernet connector pin
connections.
Figure C-1:
RJ45 Ethernet Connector
Fiber Link Ethernet
The MSS4-SFP and MSS4-DFP also include a 100BASE-FX fiber optic Ethernet connector. The figure
below shows the fiber link connector pin connections, which use the duplex ST connector interface (one
transmitter, one receiver).
Figure C-2:
Fiber Optic Connectors
MSS4 Serial Connectors
The MSS4 has four serial ports. The MSS4-D models have DB9 connectors, while the MSS4-S models have
screw terminal blocks.
Screw Terminal Block
The following sections show the pin connections of the MSS4 screw terminal blocks, which provide dual
RS-232/RS-485 serial ports.
The default serial port settings are 9600 baud, 8 bits, no parity, and 1 stop bit.
1 2 3 4 5 6 7 8
1
RX+
2
RX-
3
TX+
6 TX-
TX
RX