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User's Guide - LINX Data Terminals

User's Guide - LINX Data Terminals

User's Guide - LINX Data Terminals

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Power (3-pin Molex) port connects to the +5V-DC switching Power Supplyprovided with the Linx7-5 terminal.Power Connector Pins:1 +5 Volts2 Chassis/Earth Ground3 Signal GroundDue to PC tracelimitations, the relaycurrent must not exceed 0.5ampsDigital I/O (DB9-F) port is used to connect external switches, relays and any otherdevices that can be monitored via a sensor, or controlled via a control line. There are3 TTL control lines that provide 20ma for driving solid-state relays or similar. Onemore control line uses a relay that may switch power to a load directly. The relay israted: 0.5A @125VAC or 1A @24VDC (max VDC=60v).Digital I/O Connector Pins:1 Sensor Line # 1 Input2 Sensor Line #2 Input3 Sensor Line #3 Input4 Relay Wiper (Control line #4)5 Relay NO Output (Control Line #4) (NO=Normally open)6 TTL Control Line #1 Output7 TTL Control Line #2 Output8 TTL Control Line #3 Output9 Signal Ground<strong>LINX</strong> 7-5 <strong>User's</strong> <strong>Guide</strong> Installing Peripherals • 39

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