APC AP9340 manual Main Module, TH Module AP9341

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.

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 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 Main Module to the input connector on the TH Module, as described in step 2.

Note: The maximum combined length of all A-Link cables is 1000 m (3,280 ft).

Note: You cannot cascade Main Modules. Install only one Main Module per system.

Main Module

(AP9340)

TH Module (AP9341)

TH Module (AP9341)

A-Link port used to plug in an APC terminator.

Main Module monitoring connected devices.

CAT5 (or equivalent) cable connecting to the TH Module.

TH Module to be monitored by the Main Module.

Environmental Manager: Main Module 7