APC NETBOTZ NBRK0200 - Manual (Page 16)

NetBotz Rack Monitor 200 Installation and Quick Configuration Manual 12
How to Cascade Devices to A-Link Ports
You can cascade to A-Link ports up to twelve NetBotz Rack Sensor Pod 150s (NBPD0150) and up to a
combined total of eight Temperature Sensors with Digital Display (AP9520T) and Temperature/
Humidity Sensors with Digital Display (AP9520TH). You cannot cascade Rack Monitor 200s. Use one
Rack Monitor 200 per system. A-Link is an APC proprietary CAN (Controller Area Network) bus.
Devices compatible with A-Link are not Ethernet devices and cannot coexist on an Ethernet bus with
other networking devices, such as hubs and switches.
Before performing this procedure, follow the installation instructions provided with your NetBotz Rack
Sensor Pod 150s and sensors. Also, if you cascade ten or more devices, be sure you have a supplemental
power supply (Power Supply 100-120 Vac/24 Vdc—AP9505i) to connect to your system.
1. Connect sensors and NetBotz Rack
Sensor Pod 150s to the Rack Monitor
200, as shown.
– Use CAT-5 (or equivalent) Ethernet
patch cables ( ). Caution: Do not
use crossover cables.
– Connect to in and out ports as shown.
– The maximum combined length of all
A-Link cables must not
exceed 1000 m (3,280 ft).
2. Plug an A-Link terminator into the
unused A-Link ports  and .
Caution: The first time a NetBotz Rack Sensor Pod 150 receives power, it obtains a unique
identification address for communication over the A-Link bus. To avoid communication
problems, you must complete steps 1 and 2 before you connect a supplemental power supply.
3. If you have cascaded ten or more devices, connect one supplemental power supply (AP9505i) to
the 24 VDC Input jack of the Rack Sensor Pod 150 in or closest to the eleventh position.
(NBRK0200)
(NBPD0150)
Rack Sensor
Pod 150
NetBotz
NetBotz Rack
Monitor 200
Display (AP9520TH)
Humidity
Sensor with Digital
Temperature/
(NBPD0150)
Rack Sensor
Pod 150
NetBotz