Moxa Technologies user manual Installing the EM-1240-LX, LED Indicators, Wiring Requirements

EM-1240-LX User’s Manual Introduction

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.
P1/P2 (Tx)	Green	Serial port 1 or 2 is transmitting data.
	Off	Serial port 1 or 2 is not transmitting data.
P1/P2 (Rx)	Yellow	Serial port 1 or 2 is receiving data.
	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:

yUse 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.

yUse 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.

yKeep input wiring and output wiring separate.

yIt is advisable to label the wiring to all devices in the system.

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