Rs485 Rx Line; Rs422 Line (Rs485-1 Rx And Rs485-2 Tx); Rs485-1 Line Reception, Rs485-2 Line Repetition; Rs485 Tx/Rx Line - Videotec ULISSE Manuel D'instructions

7.4.5.1 RS485 RX line

The line RS485-1 will operate according to the
settings in the Address, Baudrate and Protocol
dip-switch.
The RS485-2 serial line is not used.
Control
RS485-1
Keyboard
Max 1200m
Fig. 41
The system is of the TNV-1 type, do not
h
connect it to SELV circuits.
7.4.5.2 RS422 line (RS485-1 RX and RS485-2
TX)
This setting allows full duplex communication
according to the RS422 standard. This means that
both the RS485-1 and RS485-2 lines are used.
Control
Keyboard
Max 1200m
Fig. 42
j This function is only available for
bi-directional protocols (e.g. PELCO,
AMERICAN DYNAMICS, Macro, etc.).
Personal
RS232
Computer
Max 10m
RS485-1 RS485-2
7.4.5.3 RS485-1 line reception, RS485-2 line
repetition
With this type of setting it is possible to connect more
than one device in cascade. The signal is repeated
from every unit, making it possible to markedly
increase total distance.
Control
RS485-1 RS485-2
Keyboard
Max 1200m
Fig. 43
j It only works with mono-directional
protocols.

7.4.5.4 RS485 TX/RX line

With this type of setting it is possible to obtain a
bi-directional, half/duplex, communication on the
RS485-1 line.
The RS485-2 serial line is not used.
Control
keyboard
Fig. 44
This function is only available for
j
bi-directional protocols (e.g. PELCO,
AMERICAN DYNAMICS, Macro, etc.).
RS485-1
Max 1200m
RS485-1
TX/RX
Max 1200m
23