Videx 4000 Series Technical Manual page 29

4000 Series GSM Audio Intercom with Proximity
RS485 Network Connection
UNIT ID.1
Art.4810
Volt Free
Contacts
NOTES: Connecting to a PC using the Art.481 is optional and only required if
permanently connecting to a PC and can be used as an alternative means of
PC programming to using the USB connection. Remember the GSM PRO
module can be connected directly to the PC using the USB connection and
then an RS485 bus connection used to connect the other devices.
Art.4850R
UNIT ID.8
RS485 bus
termination
jumper in
CLOSED position
Fig. 42
IMPORTANT NOTE: For each additional Art.4850R proximity reader a 12Vdc power supply (HDR-15-12) will be required.
4000 Series GSM Audio Intercom - Technical Manual
switch to RS485 position
485 / 232
USB-PC
USB cable
To Antenna
Volt Free Contacts
RS-232
RS485 bus
Art. 481
termination
USB-Serial Converter
jumper in
RS-485
BUS CLOSED position
A B GND
Termination
Open
Close
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Art.4850R
UNIT ID.2
RS485 bus
termination
jumper in
OPEN position
Volt Free Contacts
RS485 bus wires and
common GND wire.
Networked Art.4850R readers:
UNIT ID's 3, 4, 5 and 6
Art.4850R
UNIT ID.7
RS485 bus
termination
jumper in
OPEN position
Volt Free Contacts
66250754-EN - V1.0 - 18/02/19