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RS-232↔485/422 CONVERTERS

Table 2. DTE Jumper Settings.

NOTE

For additional information on the jumper requirements, see Section 3.1.

Function Jumper Requirements

1. Configure RS-232 port as DTE XW1 in B position

2. Signal ground connected to

frame ground

• Connected W7 is IN (100-ohm, 1/2-watt

resistor soldered in place)

• Not connected W7 is OUT

3. Half- or full-duplex operation

• Full duplex W8 in FULL position (4 wire, A-B)

• Half-duplex W8 in HALF position (2 wire, B-C)

4. CTS delay CTS not supported

5. Enable RS-485 driver

a. RS-485 driver enabled by W15 in A-B position and

RS-232 lead CD W9 in 0-ms position

W9 in 10-ms position

W9 in 30-ms position

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