50 Document # 50075 Rev B 3/13/95
Figure F-3: EIA-485 Connection
EIA-485 (Supervised and
Power Limited)
TB1
Terminal 3 RS+
Terminal 4 RS-
Install 120
ohm EOL
resistor (P/
N:71244)
across
terminals 3 &
4 if last or only
device on EIA-
485 line. Note
that Terminals
6 & 7 are not
used at this
time.
UNI•COM
CPU-5000
+-