RTCU LX4 pro Technical Manual V1.00
Advanced Industrial M2M/IoT Gateway
Logic IO ApS.
Ph: (+45) 7625 0210
Holmboes Allé 14
Fax: (+45) 7625 0211
8700 Horsens
Page 19 of 39
Denmark
RS485 port 1
This port is available on the pluggable screw terminals and is not shared with other sources.
RS485 port 1 pins
Pin
Name
Description
9
RSA 1
RS485 non-inverting signal for RS485 port 1
10
RSB 1
RS485 inverting signal for RS485 port 1
8
SGND
Signal ground
RS485 port 2
This port is available on the pluggable screw terminals and is not shared with other sources.
RS485 port 2 pins
Pin
Name
Description
12
RSA 2
RS485 non-inverting signal for RS485 port 2
13
RSB 2
RS485 inverting signal for RS485 port 2
11
SGND
Signal ground
1-Wire bus
The 1-Wire bus is available on the pluggable screw terminals. 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). For this, 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.
RJ45 connector overview.
Pin
Name
Description
6
1Wire
1-Wire bus for ID-Button / Temperature sensor
7
1W-LED
1-Wire ID-Button LED
5
SGND
Signal Ground
Specification of the 1-Wire bus:
Max.
Unit
Total weight
1
65
m
1
The term of weight has been described in “Modular 1
-wire concept
–
Technical Manual” document.