Matrix Orbital LK204-7T-1U - Manual (Page 15)

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4.3 Common Features
General Purpose Outputs
Figure 12: GPO Header
Table 8: GPO Pinout
Pin Function Pin Function
1 GPO 1 6 Vcc
2 GPO 2 7 Vcc
3 GPO 3 8 Vcc
4 NC 9 Vcc
5 Gnd 10 Vcc
A unique feature of the LK204-7T-1U is the ability to control relays
* and other external devices using
either one or six General Purpose Outputs. Each can source up to 10mA of current at five volts when on
or sink 20mA at zero volts when off. The two row, fourteen pin header can be interfaced to a number of
female connectors to provide control to any peripheral devices required.
*Note: If connecting a relay, be sure that it is fully clamped using a diode and capacitor in order to absorb any
electro-motive force (EMF) which will be generated.
Dallas One-Wire Connector
Figure 13: Dallas One-Wire Connector
Table 9: Dallas One-Wire Pinout
Pin Function
1 Vcc
2 D
3 Gnd
In addition to the six general purpose outputs the LK204-7T-1U offers an Optional Dallas One-Wire
bridge, to allow for an additional thirty two one-wire devices to be connected to the display. This
header can be populated with a Tyco 173979 connector at an added cost by custom order only. Please
use the Contact section to request more information from the Matrix Orbital sales team.