Pin assignments – Axis Communications AXIS Q7900 Rack User Manual
Page 9
AXIS Q7900 Installation Guide
Page 9
ENG
LISH
PS2 LED - This will indicate a RED light when there is an error in Power supply 2. Please shut down
PS2 and replace with a new power supply. It also indicates if PS2 is disconnected
FAN LED - This will indicate if one or more FANS need to be replaced with new ones. Please replace
the fans and reset the fans warning.
FANS button - This will reset the fan warning.
Power supply 1 and 2 - Replaceable and redundant power supply. 100-240VAC input.
Pin assignments
Pin assignments for the RS-485 connector of the AXIS Q7900 Rack
Note:
For RS-485 unit connector information for video encoders, refer to their respective Installation Guide for
I/O connector information.
Pin
AXIS Q7406
AXIS 243Q
AXIS 241Q/S, AXIS 240Q
12
Channel 6, RS485B
NC
NC
11
Channel 6, RS485A
NC
NC
10
Channel 5, RS485B
NC
NC
9
Channel 5, RS485A
NC
NC
8
Channel 4, RS485B
NC
NC
7
Channel 4, RS485A
NC
NC
6
Channel 3, RS485B
NC
NC
5
Channel 3, RS485A
NC
NC
4
Channel 2, RS485B
NC
NC
3
Channel 2, RS485A
NC
NC
2
Channel 1, RS485B
Channel 1, RS485B
RS485B
1
Channel 1, RS485A
Channel 1, RS485A
RS485A