Ethernet-Enabled Intelligent Display Modules (IDMs)

5

BOARD

DA T A

SHEET

Power over Ethernet (PoE)

The MDL-IDM identifies itself as a Class 1 Powered Device. The IEEE 802.af specification

defines Class 1 devices as those that draw between 0.44 W and 3.84 W.

If a PoE-equipped network switch or hub is not available, the MDL-IDM may be powered

either from a 24 Vdc power source or from a 5 Vdc power source. In all cases, the power

supply must be regulated within the electrical limits listed in the specification table.

When powered using PoE or a 24 V supply, the MDL-IDM is able to supply 5 V power to

external devices such as sensors or signal conditioning circuits.

Wiring

In many applications, only a single RJ45 cable is required for MDL-IDM and MDL-IDM28

operation. Figure 3 shows all possible electrical connections, including RS232, analog

inputs, and relay contacts. The actual functionality of the peripheral connections is

determined by the application software.

Figure 3. Connection Diagram

Software Development

The MDL-IDM and MDL-IDM28 modules ship with a factory-programmed example

application. This application must be replaced with a program specific to the end product.

Development requires the use of a compiler capable of generating code for an

versions of suitable development tools.

10/100

Ethernet

1GB

24Vdc (opt)

SD Card

COM

1

2

3

NC

NO

AIN0

1

2

3

4

5

6

Relay

Contacts

Analog

Inputs

AIN1

AIN2

AIN3

GND

+5.0V

+24V

GND

GND

RXD

TXD

1

RS232

2

3

+5V Input

(MDL-IDM28)