Bronkhorst Modbus slave interface Manuale Utente Scaricare il pdf (Pagina 9)

BRONKHORST®

2.3 Modbus Cables and T-parts

2.3.1 RJ45 FTP cables

For connecting instruments to Modbus you need shielded cables with at least 3 wires (for data only). Recommended

are twisted wire cables for RS485-communications with 100 or 120 Ohm impedance. All Bronkhorst Modbus cables

have also integrated power-supply wires. For the use in the EL-FLOW range (non IP-65) it is best to use Shielded

(+Foiled) Twisted Pair patch-cables with RJ45 modular jack connectors (8-pins for data and power-supply

connections).

RJ45 shielded FTP CAT.5e cable

RJ45 shielded connectors

Shielded FTP cable

Power isolator

7.03.241 Modular Y adapter cable

CAT.5e cables are available with a wire of:

26AWG (wire diameter 0.140mm

, with a resistance of 137 Ohm/km).

24AWG (wire diameter 0.205mm

, with a resistance of 86 Ohm/km).

More information about cat.5e cables can be found at::

http://en.wikipedia.org/wiki/Category_5_cable

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Bronkhorst Modbus slave interface Manuale Utente Pagina 9