EQ-3 HomeMatic Información técnica descargar pdf (Pagina 25)

10 RS485 connections

HomeMatic Central communication with the devices of the HomeMatic Wired family

(HMW)isalldoneviatheRS485interface.

The connecting lines must be constructed in accordance with the information provi-

ded in the following sections

10.1 Pin-outs for the RS485 connection

and

Infor-

mation on connecting the RS485 bus

10.1 Pin-outs for the RS485 connection

TheRS485socketconnectorfortheHomeMaticCentral(seegureinchapter4.2of

theQuick-startinstructionsfortheHomeMaticCentral:(G)RS485busconnection)is

an8pinRJ-socket.Thefollowingconnectiondiagramappliesforthissocket:

Figure 1: Connection diagram for the HomeMatic Central RS485 socket.

Viewfromfront(intothesocket),catchabove.

The pin-outs of the connection socket above are assigned as follows in the Home-

Matic Central:

Pin Assignment

1 RS485 - A

2 RS485 - B

3-8 not connected

Shielding Ground - GND

1 2 ... 20 21 22 23 24 25 26 27 28

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EQ-3 HomeMatic Información técnica Pagina 25