SW3SW2SW4
11121316 15 1417
1 2 3 4 5 6 7 8 9 10
OFF
DOORKING, INC., INGLEWOOD, CA 90301
Date: Dwg. No. Rev.
Title:
1/12
D
M1810AP-002-D
Access Plus System
RS-485 wire connections.
1
1
3
2
5 5
The wires connecting terminals 7 & 8 between RS-485 boards MUST be twisted. We
recommend that you use Cat5e cable. Use one pair to connect terminals 7 & 8, and then one
wire from the other pairs to connect terminal 6. Match terminals on RS 485 board (i.e., term 6
to term 6; term 7 to term 7; term 8 to term 8).
Termination switch is in the OFF position for middle units, and in the ON position for end units.
If terminals 6, 7 & 8 have two wires connected to them, the termination switch must be OFF. If
terminals 6, 7 & 8 have only a single wire connected, the termination switch must be ON.
Each RS-485 device (keypad, card
reader, receiver) must have a unique
address, starting with 003. Do not
skip addresses. The order in which
the device addresses are connected
to the Access Plus system does not
matter. What is important is that the
addresses must be in sequence,
starting with 003.
2 4
Maximum distance from end to end is 4000 feet in a Daisy Chain format as shown.
Correct
OFF
Address 004
ON
Address 005
End Unit
Term Sw ON
Access Plus
Controller
Address 003
OFF OFF
Address 004
ON
Address 006
3
3
MASTER CODE
1 2 3 4 5 6 7 8 9 10
OFF
Keypad
Address 003
Card Reader
Address 004
MicroPlus Receiver
Address 005
4000 Ft. Maximum
OFF
Address 004
ON
Address 003
ON
Address 005
Correct
5
Valid device addresses for use with
the Access Plus system are 003,
004, 005, 006, 007 and 008.
The device address is referred to as
a relay number in the programming
software. The relays on the Access
Plus system circuit board are 001
and 002.
In this example, the keypad is relay
003, the card reader is relay 004 and
the MicroPlus Receiver is relay 005.
SW3
SW2
SW4
1 2 3 4 5 6 7 8
ON
SW5
The Access Plus system does not have to be on the end of the Daisy Chain wiring scheme .
What is important is that the distance restriction (4000 Ft.) be observed and that the devices at
the end of the chain have their termination switch turned ON.
The wires connecting terminals 1 & 2 from the Access Plus system to terminals 8 & 7 on the
RS-485 boards MUST be twisted. We recommend that you use Cat5e cable. Use one pair to
connect these terminals (terminal 1 connects to terminals 8; terminal 2 connects to terminals 7)
and then one wire from the other pairs to connect the common terminal (terminal 3 from the
1810 Access Plus to terminals 6 on the RS-485 boards).
2
2
If wiring will be outdoors or underground, use Cat5e Gel Filled (flooded) UV Resistant Direct
Burial Cable.
4
4
5
Terminal 1 from the Access Plus board connects to RS-485 board(s) terminal 8.
Terminal 2 from the Access Plus board connects to RS-485 board(s) terminal 7.
Terminal 3 from the Access Plus board connects to RS-485 board(s) terminal 6.
Wires connecting terminals 1 & 2 to terminals 8 & 7 MUST be twisted.
Term 8
RS-485 Data A (+)
Term 6
RS-485 Common
Term 7
RS-485 Data B ( - )
Term 1
RS-485 Data A ( + )
Term 2
RS-485 Data B ( - )
Term 3
RS-485 Common
Access Plus Board RS-485 Board
RS-485 Terminal Connections
Address 003
OFF
Middle Unit
Term Sw OFF
End Unit
Term Sw ON
Middle Unit
Term Sw OFF
Middle Unit
Term Sw OFF
Middle Unit
Term Sw OFF
End Unit
Term Sw ON
Middle Unit
Term Sw OFF
End Unit
Term Sw ON
6 6 6
6
Do not power RS-485 devices from the Access Plus system. RS-485 devices must be
powered from their own power source. Refer to the individual device wiring instructions for
connection information and wiring guidelines for these products.
Wrong!
3
ON
SW1 MODEM / TCP ENB
1
2
3
4
5
6
7
8
BAD DNS
RS-485 RX
LAN DOWN
Phone Line
In Use
LAN
Connection
Data
Transmit
SW2
ON
TERMINATION
OFF
ON
AP Controller
End Unit
Term Sw ON
OFF
AP Controller
Middle Unit
Term Sw OFF
If the AP Controller is an END unit, then SW 2 is ON. If the AP Controller is a middle unit,
then SW 2 is OFF.
7
7
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