Environmental Manager: Main Module 7
Note: A-Link is an APC
proprietary CAN (Controller Area
Network) bus . Devices com patible
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 bo ttom A-Link c onnector labele d
(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.
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.
TH Module
(AP9341)
(AP9340)
Main Module
TH Module
(AP9341)