CEL-MAR ADA-4020A, Руководство пользователя, Страница: 6 / 16

3.1. ASSEMBLING
ADA-4020A converter case is adapted to assembly on TS-35 (DIN35) rail. To install converter should mount device on the rail upper
part of the case then press bottom part to hearing characteristic „Click” sound.
3.2. CONNECTION TO PC
ADA-4020A can be connected to RS232 port or USB of PC by the use of additional converter eg. RS232 to RS485 (ADA-1040) or
USB to RS485 (ADA-I9140). The connection is made via RS485 bus or RS422 bus, as on the figure bellow.
Fig 4. ADA-4020A connection to PC by the use of the RS232 to RS485/RS422 converter's ADA-I1040
Fig 5. ADA-4020A connection to PC by the use of the USB to RS485/RS422 converter's ADA-I9140
3.3. CONNECTION TO RS485 BUS
The RS485/RS422 interface at ADA-4020A converter is available on terminal block described as: Tx+/A, Tx-/B, Rx+, Rx-.
Below are shown connection of ADA-4020A converter to RS485(4W) bus and RS485(2W) bus.
3.3.1. CONNECTION TO RS485 (4-WIRES) BUS
Fig 6. Example connection of ADA-4020A to RS485 4-wires bus and galvanic separation of SLAVE device.
6
ADA-4020A
GND
USB
USB
connector
RS485(4W)
9600Bd/8/N/1
PC ADA-I9140
USB
Rx+
Rx-
Tx+/ A
Tx-/ B
Tx+ / A
Tx- / B
Rx+
Rx-
Rx-
Tx- GND
Rx+
Rx+*
ADA-4020A
Tx-
USB
connector
RS485 / RS422
connector
RS485 / RS422
connector
Current Loop
connector
(5) GND
GND
(2) Rx
(3) Tx
RS232
connector
DB-9F/DCE
RS485 / RS422
connector
RS485(4W)
9600Bd/8/N/1
RS232
connector
DB-9M/DTE
PC ADA-I1040
GND (5)
Tx (2)
Rx (3)
Rx+
Rx-
Tx+/ A
Tx-/ B
Tx+ / A
Tx- / B
Rx+
Rx-
Rx-
Tx- GND
Rx+
Rx+*
RS485 / RS422
connector
ADA-4020A
Tx+
Current Loop
connector
(5) GND
GND
(2) Rx
(3) Tx
RS232
connector
DB-9F/DCE
RS485 / RS422
connector
RS485(4W) bus
9600Bd/8/O/1
RS232
connector
DB-9M/DTE
PC or
MASTER device
ADA-I1040
GND (5)
Tx (2)
Rx (3)
Rt
Rt
Rx+
Rx-
Tx+/ A
Tx-/ B
CL
SLAVE
2400Bd/8/N/2 SLAVE
19200/Bd/7/N/2 SLAVE
9600Bd/8/E/1
CL CL