RTCU NX-900 Technical Manual V1.02
Advanced M2M/IIoT Gateway
Logic IO ApS.
Ph: (+45) 7625 0210
Holmboes Allé 14
Fax: (+45) 7625 0211
8700 Horsens
Page 26 of 45
Denmark
1-Wire
The 1-Wire bus is available on the angled front row terminals. All 1-Wire communication goes
through a single connection and all 1-Wire devices connected to this connection retrieve their
power directly from the bus (called parasitic power). For this only two wires are needed
–
the 1-
wire signal and the ground reference thus 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.
For further information regarding modular 1-
wire concept, please refer to the document “Modular
1-
Wire Concept Technical Manual” on the Logic IO webpag
e.
1-Wire terminals
Name
Description
1Wire
1-Wire bus.
1Wire-LED
1-Wire ID-Button LED output.
SGND
Signal ground.
Specification of the 1-Wire bus
:
Max.
Unit
Total weight
1
65
m
DC-Out
Two DC outputs are available on the RTCU NX-910 for supplying external equipment; a 5V and a
12V/24V output. It is possible to control these DC outputs in order to save power.
Both DC outputs are short circuit- (to ground), ESD- and transient-protected.
Make sure not to exceed the current specification of the outputs and be aware of inrush currents
of the external equipment that may exceed the specifications.
The DC outputs must be enabled from the application. Please consult the RTCU IDE on-line
manual for more information.
5V DC-Out
The +5V DC output can supply a maximum of 300 mA and is available on the angled back row
terminals. This output is named boardDCOut in the RTCU online help.
1
3 The term of weight has been described in “Modular 1
-wire concept
–
Technical Manual” document.