Videx 4000 Series Technical Manual page 28

4000 Series GSM Audio Intercom with Proximity
RS485 Network Connection
Art.4810
Art.4903
ON
RS485 BUS TERMINATION
Volt Free Contacts RLY2
Volt Free Contacts RLY1
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.4903 Art.4903
ON
RS485 BUS TERMINATION
Volt Free Contacts RLY2
Volt Free Contacts RLY1
Fig. 41
IMPORTANT NOTE: For each additional Art.4903 keypad a 12Vdc power supply (HDR-15-12) will be required.
4000 Series GSM Audio Intercom - Technical Manual
To Antenna
UNIT ID.1
RS485 bus
termination
jumper in
OFF position
OFF
UNIT ID.8 UNIT ID.8
RS485 bus RS485 bus
termination termination
jumper in jumper in
ON position ON position
OFF
switch to RS485 position
RS-232
485 / 232
RS485 bus
Art. 481
termination
USB-Serial Converter
jumper in
RS-485
CLOSED position
BUS
Termination A B GND
Open
USB-PC
Close
Volt Free Contacts RLY2
Volt Free Contacts RLY1
Volt Free Contacts RLY2
Volt Free Contacts RLY1
- 28 -
USB cable
Art.4903
UNIT ID.2
RS485 bus
termination
jumper in
OFF position
ON OFF
RS485 BUS TERMINATION
RS485 bus wires and
common GND wire.
Networked Art.4903 keypads:
UNIT ID's 3, 4, 5 and 6
Art.4903
UNIT ID.7
RS485 bus
termination
jumper in
OFF position
ON OFF
RS485 BUS TERMINATION
66250754-EN - V1.0 - 18/02/19