B&B Electronics USR604 - Manual User Manual
Page 22
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Section 5 - Hardware Installation
Page 22 of 45
Document Number: USR60x-0812m
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Switches 5 and 6 configure Port 3
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Switches 7 and 8 configure Port 4.
Figure 133: USR604 DIP Switch and Power Connectors
Operating modes are RS-232, RS-485 two-wire half-duplex, RS-485
four-wire full-duplex, and RS-422.
Port
Switch
RS-232
RS-422
RS-485
4-wire
RS-485
2-wire
Port 1
1
Off (down)
On (up)
Off (down)
On (up)
2
Off (down)
On (up)
On (up)
Off (down)
Port 2
3
Off (down)
On (up)
Off (down)
On (up)
4
Off (down)
On (up)
On (up)
Off (down)
Port 3
5
Off (down)
On (up)
Off (down)
On (up)
6
Off (down)
On (up)
On (up)
Off (down)
Port 4
7
Off (down)
On (up)
Off (down)
On (up)
8
Off (down)
On (up)
On (up)
Off (down)
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