APC AP9341 Specifications download pdf (Page 14)

Installation—Accessories

10 Temperature/Humidity Module

Connecting TH Modules

To connect the Main Module to the TH Module:

1. Connect the first TH Module to either port

marked A-Link on the rear of the Main

Module, using a standard CAT5 (or

equivalent) Ethernet patch cable (APC part

number 3827BK-10 or equivalent). Do not use

a crossover cable for connection.

2. Connect the cable from the Main Module to

the top A-Link connector labeled

(indicating “input”) on the TH Module.

Connect the bottom A-Link connector labeled

(indicating “output”), to the next TH

Module.

3. Plug an APC terminator (0W04161) into the

unused A-Link port at each end of the string.

The Main Module does not have to be at the

beginning of the chain of cascaded modules. You

can cascade TH Modules from both A-Link ports

of the Main Module. Always connect the

Environmental Manager to the input connector on

the TH Module, as described in step 2.

Note

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.

Note

The maximum combined length of all

A-Link cables is 3280 ft (1000 m).

Note

It is not possible to cascade Main

Modules. Install only one Main

Module per system.

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