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RTCU LX2 pro Technical Manual V1.00
Advanced Automotive M2M/IoT Gateway
1-Wire Bus
The 1-Wire bus is available on the X2 connector. All 1-Wire communication goes through a single
connection, and all 1-Wire devices connected can retrieve power directly from the bus (called
parasitic power). Only two wires are needed – the 1-wire signal and the ground reference – allowing
minimal cable installations.
For 1-Wire ID-Button readers, which include a built-in LED, a dedicated output is available for this
purpose. Please consult the RTCU IDE documentation for further information.
X2: 12 pin COM connector overview
Pin
Name
1
1Wire
7
1W-LED
2
SGND
Specification of the 1-Wire bus:
Total weight
1
DC-Out – 5 Volt
A 5V DC output is available on the X2 connector. It is possible to control the output to save power.
The output is short circuit- (to ground), ESD- and transient protected. Make sure not to exceed the
current specification of the output, and be aware that inrush currents of the external equipment may
exceed the specifications. It is recommended to install a fuse to protect the output.
This output must be enabled from the application. Please consult the RTCU IDE online manual for
more information.
X2: 12 pin COM connector overview
Pin
Name
12
DC-Out
11
GND
1 The term of weight has been described in "Modular 1-wire concept – Technical Manual" document.
Logic IO ApS.
Holmboes Allé 14
8700 Horsens
Denmark
Description
1-Wire bus
1-Wire ID-Button LED
Signal Ground
Description
+5V/300mA DC-Out for external equipment.
Signal Ground
Page 22 of 39
Max.
Unit
65
m
Email: support@logicio.com
Ph: (+45) 7625 0210
Fax: (+45) 7625 0211
www.logicio.com
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