2 general purpose outputs – Matrix Orbital LK162-12 Legacy User Manual

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LK162-12 rev 4

10001010. Matrix Orbital would describe the Philips I

C address of 45hex as 8Ahex. The read address would

be 8Bhex.

For more information on Phillips I

C please visit…

http://www.ping.be/~ping0751/i2cfaq/i2cindex.htm

and for more information specific to our displays visit…

http://www.lcdforums.com/forums/viewtopic.php?t=910

To communicate by I

C two jumpers have to be set into the I

C position left of the power SIP connector. The

C setting is default on the LK162-12.

Connector pinout is as follows:

1 2 3 4

Pin 1

Vdc

Pin 2

SCL (I

C clock)

Pin 3

SDA (I

C data)

Pin 4

Ground

2.2 General Purpose Outputs

The LK162-12 has seven general purpose outputs. These are provided to control relays or other electronic
devices. This allows external devices to be turned on or off using your PC or controller and software
commands. (See sections 6.1.10 and 6.1.11 for the command syntax.)

Each output is wired as shown in Figure 2-8. The + terminal is connected directly to the module positive
supply, the – terminal is connected through a 240 ohm current limiting resistor and the electronic switch to
ground.