Distech Controls ECL/ECB-PTU Series User Manual page 78

Figure 45: Subnetwork Module Connection with an ECx-Display Connected as a Stub Example
ECx-Display
Figure 46: Maximum Length of the 2-Wire Subnetwork Data Bus, ECB-600 / ECL-600 Series Controllers
When both ECx-4XX Series Extension I/O Modules and any Cat 5e subnetwork expansion
module are used with an ECB-600 or ECL-600 Series controller, the total maximum length of
all subnetwork data buses is 1 000 ft (300 m). That is, any length of the Cat 5e cable subnet-
work data bus will reduce the maximum length of the 2-Wire Subnetwork Data Bus.
The example below shows that if the length of the Cat 5e Cable Subnetwork Data Bus (used
to connect to the Allure Series sensors) is 500 ft (150 m) then the length of the 2-Wire Subnet-
work Data Bus (used to connect to the ECx-4XXs Series) can only be a maximum of 500 ft
(150 m), for a maximum 1 000 ft (300 m) total length.
76
600 ft [180 m] Maximum Length
6.5 ft [2m]
Maximum
ECx-Subnet
Adapter
Controller
Cat 5e Cable Sub network Bus
Typical Room Devices
Network Guide