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MPA1 User Guide
Configuring the EVL (Ethernet Virtual Group)
What is an EVL?
An Ethernet Virtual Loop (EVL) allows a group of IP network connected MPA1 controllers
to be managed as a group, through an embedded Web Server residing on one of the
controllers.
Up to 16 controllers may be grouped into an Ethernet Virtual Loop.
The grouping is known as a Virtual Loop since the administration paradigm is similar to an
RS-485 loop, which is used in MPA2 and NetAXS - 123 panels.
Figure 2-1 EVL System Diagram
Note EVL is not evaluated by UL294 and UL60839-11-1
Network Requirements
The controllers must be connected to a common IP sub-network that provides dynamic
address assignment through DHCP.
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