Moxa Technologies EM-1240-LX - Manual (Page 12)

EM-1240-LX User’s Manual Introduction
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Installing the EM-1240-LX
If you would like to use the EM-1240 Embedded Module and the EM-1240 Development Kit,
insert the EM-1240 Embedded Module vertically onto the Development Kit. Note that the pin
marked “JP4” on the Embedded Module must be matched with the pin marked “JP6” on the
Development Kit; and the Pin marked “JP3” on the Embedded Module must be matched with the
Pin marked “JP4” on the Development Kit. Be careful when inserting the module to avoid
damaging the product.
LED Indicators
The following table explains the function of the five LED indicators located on the EM-1240-LX’s
top panel.
LED Name LED Color LED Function
Ready Green Power is on and functioning normally.
Green Serial port 1 or 2 is transmitting data. P1/P2 (Tx)
Off Serial port 1 or 2 is not transmitting data.
Yellow Serial port 1 or 2 is receiving data. P1/P2 (Rx)
Off Serial port 1 or 2 is not receiving data.
Wiring Requirements
This section describes how to connect the EM-1240-LX to serial devices.
You should heed the following common safety precautions before proceeding with the installation
of any electronic device:
y Use separate paths to route wiring for power and devices. If power wiring and device wiring
paths must cross, make sure the wires are perpendicular at the intersection point.
NOTE: Do not run signal or communication wiring and power wiring in the same wire
conduit. To avoid interference, wires with different signal characteristics should be routed
separately.
y Use the type of signal transmitted through a wire to determine which wires should be kept
separate. The rule of thumb is that wiring that shares similar electrical characteristics can be
bundled together.
y Keep input wiring and output wiring separate.
y It is advisable to label the wiring to all devices in the system.