Moxa V2426A-C7-T-W7E [14/88] Installing the epm expansion modules

V2400A Series Expansion Modules Hardware Connection Description

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Installing the EPM Expansion Modules

The EPM series expansion modules are designed to work with Moxa’s V2426A embedded computer. To insert an

expansion module into a slot on the embedded computer:

1. Remove a slot cover by unfastening the screws.

2. Insert the module into the slot.

3. When finished, tighten the screws to hold the module in place.

Connecting Data Transmission Cables

In this section we explain how to connect devices to the EPM modules.

EPM-3032 Serial Port Module

Use a serial cable to plug your serial device into the module’s serial port. Serial ports 1 and 2 are provided with

male DB9 connectors and can be configured for RS-232, RS-422, or RS-485 communication by software. The

pin assignments are shown in the following table:

DB9 Male Port

-232/422/485 Pinouts

Pin RS-232 RS-422

RS-485

(4-wire)

RS-485

(2-wire)

1 DCD TxDA(-) TxDA(-) –

2 RxD TxDB(+) TxDB(+) –

3 TxD RxDB(+) RxDB(+) DataB(+)

4 DTR RxDA(-) RxDA(-) DataA(-)

5 GND GND GND GND

6 DSR – – –

7 RTS – – –

8 CTS – – –