Johnson Controls 300 Series Manual page 31

Network Control Module 300 Series Technical Bulletin
Figure 7 shows how to make the N1 connection on the ARCNET card.
In the Troubleshooting Procedures section of this document, Related
Commissioning Problems lists some N1 End-of-Line (EOL)
termination notes regarding N1 cabling and termination.
Note: Make sure metallic portions of N1 Network connectors are
not contacting ground. Wrap them with insulating tape if contact is
possible.
Figure 7: N1 LAN Connection
L W Connection
ON ORKS
A L W ISA card (NU-NET201-0, NU-NET202-0,
ON ORKS
NU-NET203-0, or NU-NET203-1) is required in an NCM in order to
connect it to a L W
ON
the NCM. An end-of-line termination must be installed at each end of
the bus to balance the L
Refer to detailed instructions in the L
Bulletin (LIT-6364100) or the L
Bulletin (LIT-1162150).
Tee
1 2 3 4 5 6 7 8
BEFORE INSTALLING MEMORY
network. Install the card into ISA Slot 2 of
ORKS
W communications signal.
ON ORKS
W
ON ORKS
W Network Layout Technical
ON ORKS
EOL Termination
(93 ohm)
-ATTENTION -
PLEA SE DISCONNEDT BA TTERY
NEXT SE RVICE DA TE:
DISCON NEC T
POWER B EFOR E
SERVICING
DA NGER
LINE VOL TAGE
IN SID E
ncm3005
N2E Bus Technical
31