52
Network Controllers Manual
Style 7 (Class A) 20mA Single Line Wiring , no COMM-3S
RED STRIPE
RED STRIPE
[NWC-0024.CDR]
MAXIM
MAXIM
UCN 5800A
9111
UCN 5800A
9111
UCN 5800A
9111
UCN 5800A
9111
UCN 5800A
9111
UCN 5800A
9111
UCN 5800A
9111
UCN 5800A
9111
TB1
TB1
TB3
TB3
TB2
TB2
24V COM EARTH
24V COM EARTH
DATA
IN
DATA
IN
DATA
OUT
DATA
OUT
+
+
+
+
+
+
-
-
-
-
TO "DATA IN"
TERMINALS
OF NEXT SO-20.
TO "DATA IN"
TERMINALS
OF NEXT SO-20.
TO "DATA OUT"
TERMINALS
OF PREVIOUS
SO-20.
TO "DATA OUT"
TERMINALS
OF PREVIOUS
SO-20.
TO CORRESPONDING
TERMINALS OF
PS4/8B WITHIN SAME
ENCLOSURE
TO CORRESPONDING
TERMINALS OF
PS4/8B WITHIN SAME
ENCLOSURE
1
1
1
1
Supervised and power limited.
SO-20 and COMM-3S installed in common enclosure.
Remove SN-75176, RS-485 driver chip and replace with
header installed with red stripe oriented toward
notched end (pins 1 and 8) of socket.
NOTES:
1
2
3
3
3
RED STRIPE
P3
P3
J3
J3
J4
J4
P1
P1
P2
P2
J1
J2
J1
J2
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