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Description
NET-4 Communication Interface
The NET-4 provides the communica-
tion interface between PSR-1 remote
panels and the main MXL. It is a Style
4 communication interface to the MXL
RS-485 network. The NET-4 permits
local annunciation of ground faults at
each remote MXL panel. Ground fault
detection for the network itself is
provided by the MMB-1/-2 main board.
Each NET-4 connected represents one
network drop on the MXL System. The
total number of NET-4s permitted is
31. (The first position is always occu-
pied by the MMB-1/-2.)
The NET-4 installs into the PSR-1
remote power supply. The PSR-1
provides all necessary power to the
NET-4 through the card edge connector
P7. There are no configuration switches
or jumpers on the NET-4.
NET-7 Communication Interface
The NET-7 module provides a Style 7
communication interface between the
main MXL and multiple remote panels
in an MXL System. Each NET-7, except
the NET-7 connected to the MMB-1/-2,
electrically isolates the pairs from the
local power supply and isolates ground
faults to a single remote panel. The
MMB-1/-2 provides ground fault detec-
tion for the two pairs.
Each NET-7 connected represents one
network drop on the MXL System.
There can be a maximum of 32 drops
including the MMB-1/-2. The NET-7 has a
network address which must be set on
the module and installed into the CSG-M
network map.
The NET-7 offers advanced perfor-
mance over the NET-4.
NET-4 Communication Interface
NET-7 Communication Interface
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