3.3.2. EXAMPLES OF CONNECTION THE CONVERTER TO FIBER OPTIC BUS
Fig.7. Examples of connection ADA-7240 converter fiber optic bus and devices with RS485 interface.
8
ADA-7240
ADA-7010
FO
connector
TX
RX
RX
DSR
DTR
RTS
CTS
TX
V (+)
V (-)
PC
RS232
connector
RX
DSR
DTR
RTS
CTS
TX
ADA-7020
Current loop
connector
FO
Conn.
TX
RX
V (+)
TX-
TX+
RX+
RX-
V (-)
Controller
Current loop
connector
V (+)
TX-
TX+
RX+
RX-
V (-)
ADA-7240
RS485
connector
FO
connector
TX1
RX1
TX2
RX2
V (+)
TX-/B
TX+/A
RX+
RX-
V (-)
V +
V -
Power Supply
ADA-7240
RS485
connector
FO
connector
TX1
RX1
TX2
RX2
V (+)
TX-/B
TX+/A
RX+
RX-
V (-)
V +
V -
Power Supply
RS232
connector
