USB – RS-485
Jumpers
•
To set in USB – RS-485 mode, 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.
•
RS-485 buses J3 are J4 equal. Any or both of them may be used. See page 12.
•
No external power supply is required, but J8 can be used to power up the RS-485 devices connected in
connectors J3 and J4. The power supply is routed from J8 to J3 terminal 1 and J4 terminal 1.
4
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-485
device
C
D1
D0
+
C +
