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RS-232↔485/422 CONVERTERS
NOTE
When the jumper W9 (CTS) is in the ON position and jumper W15 is in
the A-B position, the RS-485 driver is always turned on to enable
transmission of data. Therefore, half-duplex transmission cannot be
performed. See Section 3.1.5 for an explanation of the RS-485 driver.
Figure 1. Layout of the Printed Circuit Board.