Revised 11/26/01 • UNI/32
5
© 2001 Automated Logic Corporation
Connecting the UNI/32 to an
ARC156, MS/TP, or Legacy CMnet
network segment
The UNI/32 supports several
communications options through its CMnet
connection port.
On a WebCTRL system, the UNI/32 can
connect to a legacy CMnet at 9600 bps or 38.4
kbps, to a BACnet-over-ARCNET network
segment at 156 kbps, or to a BACnet MS/TP
at 9600 bps or 38.4 kbps.
NOTE
The UNI/32 has the ability to connect
to ARC156, BACnet MS/TP, or Legacy
networks. For maximum performance, ALC
recommends that the UNI/32 be configured
for ARC156. All modules on the CMnet must
already be downloaded with module driver
v1.2 or later to use BACnet MS/TP.
On a SuperVision system, the UNI/32 can
connect to a legacy CMnet at 9600 bps or 38.4
kbps or to a BACnet-over-ARCNET network
segment at 156 kbps.
NOTE
BACnet MS/TP is not available on a
SuperVision system.
When communicating on an ARC156 CMnet,
use an A3ARC156 wire available from
Magnum Cable Corp. Use a dedicated 22AWG
to 18AWG twisted pair wire for legacy CMnet
(EIA-485) wiring. For more information about
CMnet wiring, refer to the
Technical Handbook
or to the
ARC156 CMnet Wiring Technical
Instructions.
To set the baud rate at 156 kbps (when using
an ARC156 CMnet), set the baud rate jumper
to Arc156 (see Figure 5).
To set the baud rate at 38.4 kbps, set the baud
rate jumper to 9600/38.4K, and set the first
switch on the eight-position DIP switch to
38.4K (see Figure 6).
To set the baud rate at 9600 bps, set the baud
rate jumper to 9600/38.4K, and set the first
switch on the eight-position DIP switch to
9600 (see Figure 6).
You can verify that the UNI/32 is
communicating on the CMnet by making sure
the CMnet transmit and receive LEDs are
active.
Addressing
The UNI/32 has an eight-position DIP switch
for assigning the module’s address. Before
setting or changing the address, make sure
the UNI/32’s power is off, since the UNI/32
only reads the address when the module is
turned on.
• For WebCTRL systems, use the switches
to assign the device’s MAC (medium
Figure 5. Setting the CMnet baud rate to 156
kbps
Figure 6. Setting the CMnet port baud rate to
38.4 kbps or 9600 bps
Arc 156
9600/38.4K
C Mnet Baud 9600
64
32
16
8
4
2
1
38.4k
