Apc NETBOTZ NBRK0200 User Manual download pdf (Page 16)

NetBotz Rack Monitor 200 Installation and Quick Configuration Manual12

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

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