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2-Port RS-232/422/485
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CHAPTER 3: Card Setup
Figure 3-3. RS-485 4-wire with echo.
Figure 3-4. RS-485 2-wire with echo.
Figure 3-5. RS-485 2-wire without echo.
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T P P L L
E
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3
T P P L L
E
1
2
3
T P P L L
E
1
...
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