Nokeval RCS770, Руководство пользователя

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USB – RS-422
Jumpers
•
Set J10 and J12 according to the picture.
• J1 and J5 define the 485 bus termination, see page 12.
• J14 controls the power supply options, see page 10.
•
J11 and J9 are not used.
Connections
• USB is connected to a computer. See page 11 on drivers.
•
J3 and J4 are the RS-422 bus. This device transmits at J3 and receives at J4.
• No external power supply is required.
5
Power
supply
(optional)
4 3 2 1 4 3 2 1 3 2 1
J7
J6
J2
J3 J4 J8
J1
J5
J10
J12
J13
J11
J9
J14
D1
D2 D3
USB
RS-422
device
C
T1 T0
+ C +
R1 R0
R
x-
R
x+
T
x-
T
x+
C
om
m
on
P
o
we
r