rs-232 to rs-485 converter ca-a360-a
rS-232 to rS-485 conVerter
ca-a360-a
The CA-A360-A RS-485 Converter module is a communication
interface that is installed between the managing computer
and the first controller of your Centaur access control system.
Connect the controllers in a “daisy chain” configuration up
to a distance of 1220m (4000ft). Two converters can also
be used as a repeater, extending the distance of an RS-232
or RS-485 bus by 1220m (4000ft). Transmit, receive and
power LEDs provide visual indication of the module’s status.
• Converts RS-485 protocol to RS-232
• Communicate with a CT-V900-A controller up to
1220m (4000ft) away.
• Transmit, Receive and Power status LEDs
• On-board End-Of-Line (EOL) and BIAS jumpers
• 2m (6ft) 9-Pin D-Sub RS-232 connector included
• Power Requirements: 12Vdc
• Current consumption: 100mA max.
• Selectable baud rate: 9600 or 19200 bps
• Recommanded cable: Ethernet grade 3, blue
jacket, 2 twisted pairs, 24 AWG
www.cdvgroup.com
cable wiring
LED INDICATORS
RX (receive data): Incoming transmission from controller network.
TX (transmit data): Outgoing transmission to controller network.
Power: Indicates the presence of 12Vdc.
JUMPERS
JP1 and JP2 (Positive and Negative bias)
Jumpers JP1 and JP2 are used to adjust the bias on the RS-485 bus.
Must remain “on” in the above configurations.
Figure 1
Blue
#6
Red
#3
Yellow Green
#5
#4
Black White
#2
#1
CA-A360-A
RECEIVE
JP3 (End of line resistor)
Must remain “ON” for the first CA-A360-A of an RS-485 bus.
(Default: ON)
TRANSMIT
POWER
Pin
DB25 DB9
Number Function Pin
Pin
RS485
N/A
N/A
1
(B-)
2
RS485
(A+)
N/A
N/A
3
Not used
N/A
N/A
4
RS-232
Ground
7
5
5
RS-232
Receive
3
2
6
RS-232
Transmit
2
3
GND
TX
RX
GND
BA+
GND
+12V
RATING
Maximum current consumption: 100mA @ 12Vdc
System Installation
Figure 2
Connect one end of the 6 pin cable that comes with the CA-A360-A
module to the connector on the module.
Controller #1
The other end of the 6 pin cable should be connected to the serial
communications port on the computer using the appropriate adapter (9
pin adapters provided).
Z9-10
COM
Connect to PC RS-232
Port using DB-9F Adaptor
Z11-12
Z13-14
DB-9F
Maximum Length
7.6M (25 FT)
Repeater Installation
A1+
B1GND
Controller #1
+12V
GND
A1+
B1GND
Controller #2
POWER
TRANSMIT
RECEIVE
CA-A360-A
Maximum
distance
7.5m / 25ft
B1GND
Controller #3
GND
TX
RX
GND
BA+
GND
+12V
+12V
GND
A1+
B1-
GND
Third module
Controller #4
GND
TX
RX
GND
BA+
GND
+12V
+12V
GND
A1+
B1-
GND
Controller #5
A1+
B1GND
To last controller up to 1220m / 4000ft
CDV Group 31 avenue du Général Leclerc, 93500 PANTIN
Tél: 33 (0) 1 48 91 01 02 • Fax: 33 (0) 1 48 91 21 21
www.cdvgroup.com
CDV Americas 1645-A Autoroute Laval (440), Laval, Qc
Tél: (450) 682-7945 • Fax: (450) 682-9590
www.cdvamericas.com
Specifications may change without prior notice.
Printed in Canada - 15/01/07 - CA-A360-A_IE
POWER
TRANSMIT
RECEIVE
CA-A360-A
GND
TX
RX
GND
BA+
GND
+12V
Second module
POWER
Note:
Remove the EOL jumper on the CT-V900-A controllers connected to the
CA-A360-A modules used as repeaters (Controllers 3 and 4 in Figure 3).
Z15-16
A1+
Maximum
distance
1220m / 4000ft
TRANSMIT
Power can be supplied by the model CT-V900-A controllers or a separate
power supply. When using a separate supply, connect the GND terminal
of the CA-A360-A module to the negative terminal of the controller.
First module
RECEIVE
Connect the A+, B- and GND terminals of each CA-A360-A module to
the A1+, B1- and GND terminals of the appropriate controller using a
shielded, 4 wire, stranded cable (refer to Figure 3).
Connect to RS-232
PC port instead of
6 pin modular jack
cable
Figure 3
CA-A360-A
Using the screw-in terminals, connect RX of the second CA-A360-A
repeater module to TX of the 3rd module. Connect TX of the second
module to RX of the 3rd module. Ground terminal of the second
module should be connected to GND on the 3rd module (7.6m / 25ft
maximum).
}
GND
TX
RX
GND
BA+
GND
+12V
POWER
TRANSMIT
6 PIN
Modular Jack
RECEIVE
COM
CA-A360-A
The +12V and GND terminals of the CA-A360-A should be connected
to the +12V and GND terminals of the CT-V900-A controller (refer to
Figure 2).
GND
POSITION
Connect the A+, B- and GND terminals of the CA-A360-A module to the
A1+, B1- and GND terminals of the first controller using shielded, 4 wire,
stranded cable (refer to Figure 1).
+12
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