Axis Q1775-E Mode D'emploi page 17

3–
Configurable
4
(Input or
Output)
RS485/422 Connector
Two 2-pin terminal blocks for RS485/RS422 serial
interface. The serial port can be configured to support:
• Two-wire RS485 half duplex
• Four-wire RS485 full duplex
• Two-wire RS422 simplex
• Four-wire RS422 full duplex point to point
communication
Function
RS485/RS422 RX/TX
A
RS485/RS422 RX/TX
B
RS485/RS422 TX A
RS485/RS422 TX B
AXIS Q1775-E Network Camera
Digital input – Connect to pin 1 to activate,
or leave floating (unconnected) to deactivate.
Digital output – Connected to pin 1 when
activated, floating (unconnected) when
deactivated. If used with an inductive load,
e.g. a relay, a diode must be connected in
parallel with the load, for protection against
voltage transients.
Pin Notes
1
(RX) For full duplex RS485/RS422
(RX/TX) For half duplex RS485
2
3
(TX) For full duplex RS485/RS422
4
RX/TX TX
1 2 3
17
0 to max 30 V DC
0 to max 30 V DC, open
drain, 100 mA
4