Installation
Connecting Ethernet
17
© Lutz-Jesco GmbH 2018
Subject to technical changes.
180426
BA-40900-02-V01
Gas warning device
EASYCON GW
Operating instructions
7.9 Connecting Ethernet
You can use the Ethernet connection for the following actions:
n
Reading/writing via Modbus TCP/IP protocol (PLC or Computer)
n
Access via web browser
n
Access via TFTP server
The device has a network input in the form of a M12x1 socket. Lutz-Jes-
co GmbH offers different lengths of special twisted-pair network cables
to make the typical Ethernet RJ-45 plug connection. If you use third-party
cables, choose a Category 3 cable with an impedance of 100 Ohm or
above.
Pin
Assignments
Wire colours
1
TX-
yellow
2
TX+
orange
3
RX-
white
4
RX+
blue
-
Screen
-
Table 14: Ethernet connection socket
Fig. 12: Ethernet socket
Installing a wired network
During installation, comply with the following points:
n
The Ethernet is cabled in a star topology. The maximum cable length
is 100 m.
n
You must route separately as a bundle the different categories of
cables (e.g. power supply, data lines and sensitive lines for measuring
purposes). In this connection, cables should cross at an angle of 90°.
n
There must either be a minimum distance between the power cable
and data lines of 10 cm or you must install a partition or route the data
line in a metal pipe.
n
Only use screened cables and plug-in connectors.
n
Route copper wires outside cable support systems through plastic
pipes.
n
Temperatures that are too high or too low result in lower mechanical
and electrical loading or lead to damage.
n
Data lines must only be subjected to a defined tensile load; otherwise,
the electrical or attenuation values can no longer be guaranteed.
n
When pulling cables out of the cable drum, avoid looping or pulling
over sharp edges.
n
With copper wires, implement potential equalization; when doing this,
differentiate between hazardous and non-hazardous areas.
n
Electrical, magnetic and electromagnetic fields affect signal
transmission and under some circumstances can destroy electronic
components.
