5-10
Intellio
C218
Turbo
/
PCI User's Manual
RS-485 Cable Wiring for Opt8J
One RS-485 connection box designed for
Intellio
C218
Turbo
/PCI
is:
Opt8J:
Connection box with 8 female RS-422/485 DB25 ports. Set the port switch
to
ON
position.
The Opt8J supports
only 2-wire half-duplex RS-485 communication
.
Data+/-
pins are served for both data transmitting and receiving, depending on the RTS
signal.
RS-485 Pinouts for Opt8J:
Opt8J
3
Data+(B)
7
GND
16
Data-(A)
Multidrop RS-485 Half-duplex
Point-to-Point RS-485 Half-duplex
Opt8J
RS-485 Device 1
Opt8J
RS-485 Device
Master
Slave
3 Data+(B)
Data+(B)
3
Data+(B)
Data+(B)
16 Data-(A)
Data-(A)
16 Data-(A)
Data-(A)
7 GND
GND
7
GND
GND
RS-485 Device N
Slave
Data+(B)
Data-(A)
GND
See Section “
RS-485 Programming”
of Chapter “
Serial Programming Tools”
for
more Opt8J RS-485 programming details.
3 Data+ (B)
7 GND
Data- (A) 16
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