For more information about network topologies for
Metasys BACnet/IP Controllers, refer to the Metasys IP
Networks for BACnet/IP Controllers Configuration Technical
Bulletin (LIT-12012458).
FC Bus terminal block (or N2 protocol as
required) on CGM controllers
The FC Bus terminal block is a blue, removable, 4-pin
terminal block that fits into a board-mounted pin header.
When connecting the CGM to the FC Bus, wire the bus
terminal blocks on the controller and other FC Bus devices
in a daisy-chain configuration using 3-wire twisted,
shielded cable as shown in Figure 6. For more information
about FC Bus terminal functions, requirements, and
ratings, see Table 5.
Figure 6: FC Bus terminal block wiring
Note: The FC Bus Shield (SHD) terminal is isolated
and can be used to connect (daisy chain) the shields
for FC Bus wiring.
SA Bus terminal block
The SA Bus terminal block is an orange, removable, 4-pin
terminal block that fits into a board-mounted pin header.
When connecting an SA Bus device to the controller, wire
the SA Bus terminal block on the controller and other SA
Bus devices in a daisy-chain configuration using 4-wire
twisted, shielded cable as shown in Figure 7. See Terminal
wiring guidelines, functions, ratings, and requirements
for more information about communication bus terminal
block functions, ratings, and requirements.
Figure 7: SA Bus Terminal Block Wiring
Note: The POWER terminal supplies 15 VDC. The
POWER terminal can be used to connect (daisy
chain) the 15 VDC power leads on the SA Bus.
Note: Do not use the modular SA Bus port and the
terminal block SA Bus simultaneously. Only use one
of these connections at a time.
Note: The CGM/CGE controller is the EOL for the SA
Bus.
FC Bus port on CGM controllers
The FC Bus port on the front of the CGM controller is an
RJ-12, 6-position modular jack that provides a connection
for the Mobile Access Portal (MAP) Gateway, or the ZFR
Pro Wireless Field Bus Router.
The FC Bus port is connected internally to the FC bus
terminal block. See Table 5 for more information
about communication bus port functions, ratings, and
requirements. The FC Bus port pin assignment is shown in
Figure 8.
Figure 8: Pin number assignments for FC Bus and SA
Bus ports on equipment controllers
Sensor (SA Bus) port
The SA Bus port is an RJ-12, 6-position modular jack
that provides a connection for the MAP Gateway,
the VAV Balancing Tool, the DLK0350, DIS1710 local
controller display, specified network sensors, or other
SA Bus devices with RJ-12 plugs. When the controller is
M4-CG Series General Purpose Application Controller Installation Guide 5
To Next Page
Loading...
