LiftMaster Icon 26 ICON26 Manual - Page 21

Rs485 Star Connection Example

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RS485 STAR CONNECTION EXAMPLE 2-NO 2-NC 2-COM 1-COM GND 2-IN 1-IN Remote Access RS485 COMMUNICATOR CARD capacity Main M Card Slot RS485 Memory Card Slot RS485 Card Release Button NOTE: To support RS485 devices you must insert the RF communicator card in the RS485 memory card slot BEFORE turning on the processor. Gnd - + AU OUTPUT ) ) RS485 (3) 12V AUX AC/DC YS INPUT POWER IN (+) (-) GND RS485 (1) () () ND RS485 (4) (+) (-) GND RS485 (2) TE NE IN POSTAL/ E VCR SWITCH INP RELA IN GN V-C V NO COM NC NO COM NC NO GATE DOOR RELAY RELAY VIDEO OUT CHASSIS GROUND CAMERA It i MANDATOR hat s unit is properly gro ded. The p vide "chassis ground" wi must be con cte o the ground rod. If u t is not gro ded ightning damage r to the owners Gnd - + Gnd + - - + Gnd Keypad RS485 Remote Device 3 Stand-Alone Receiver RS485 Remote Device 4 Use 22 AWG Twisted Pair Shielded Wire Card Reader RS485 Remote Device 2 Icon Page 20 Universal Interface Board RS485 Remote Device 1

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20
Icon Page
RS485 STAR CONNECTION EXAMPLE
RS485 Card Release Button
Main M
Card Slot
RS485 Memory Card Slot
NOTE:
To support RS485 devices you must insert
the RF communicator card in the RS485 memory
card slot
BEFORE
turning on the processor.
COMMUNICATOR CARD
Remote Access RS485
capacity
()
()
ND
)
)
(+)
(-)
GND
N
I
N
G
C
-
V
O
N
V
(+)
(-)
GND
M
O
C
C
N
O
N
O
N
-
2
C
N
-
2
M
O
C
-
2
M
O
C
-
1
D
N
G
N
I
-
2
N
I
-
1
M
O
C
C
N
O
N
RS485 (4)
RS485 (3)
AU
OUTPUT
YS
AUX
INPUT
12V
AC/DC
RS485 (2)
POWER IN
TE
NE IN
POSTAL
SWITCH
E
INP
VCR
RELA
/
RS485 (1)
GATE
RELAY
DOOR
RELAY
CHASSIS
GROUND
CAMERA
VIDEO
OUT
It i
MANDATOR
hat
s unit is properly
gro
ded. The p
vide "chassis ground"
wi
must be con
cte
o the ground rod.
If u
t is not gro
ded ightning damage
r to the owners
+
Gnd
–
+
Gnd
–
+
Gnd
–
+
Gnd
–
Card Reader
RS485 Remote
Device 2
Stand-Alone Receiver
RS485 Remote
Device 4
Universal Interface Board
RS485 Remote
Device 1
Keypad
RS485 Remote
Device 3
Use 22 AWG Twisted Pair Shielded Wire