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UC-7400 Hardware User’s Manual Introduction
1-17
ATTENTION
This product is intended to be mounted to a well-grounded mounting surface, such as a metal
panel.
SG: The Shielded Ground (sometimes called Protected Ground) contact is
the left most contact of the 3-pin power terminal block connector
when viewed from the angle shown here. Connect the SG wire to an
appropriate grounded metal surface.
Connecting to the Network
Connect one end of the Ethernet cable to one of UC-7400’s 10/100M Ethernet ports (8-pin RJ45)
and the other end of the cable to the Ethernet network. If the cable is properly connected,
UC-7420/7410 will indicate a valid connection to the Ethernet in the following ways:
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The lower right corner LED indicator maintains a
solid green color when the cable is properly
connected to a 100 Mbps Ethernet network. The
LED will flash on and off when Ethernet packets
are being transmitted or received.
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The lower left corner LED indicator maintains a
solid orange color when the cable is properly
connected to a 10 Mbps Ethernet network. The
LED will flash on and off when Ethernet packets
are being transmitted or received.
Pin Signal
1 ETx+
2 ETx-
3 ERx+
4 ---
5 ---
6 ERx-
7 ---
8 ---
Connecting to a Serial Device
Use properly wired serial cables to connect UC-7420/7410/7408 to serial devices.
UC-7420/7410/7408’s serial ports (P1 to P8) use 8-pin RJ45 connectors. The ports can be
configured by software for RS-232, RS-422, or 2-wire RS-485. The precise pin assignments are
shown in the following table:
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Pin RS-232 RS-422 RS-485
1 DSR --- ---
2 RTS TXD+ ---
3 GND GND GND
4 TXD TXD- ---
5 RXD RXD+ Data+
6 DCD RXD- Data-
7 CTS --- ---
8 DTR --- ---