RS232 to 1-PORT RS422/ RS485 ADAPTER W/ OPTO-ISOLATION - NEW REVISION
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The ES-R-2101B-M is an RS232 to RS485 / RS422 adapters that support transfer rates up to 1M baud. The ES-R-2101B-M includes optical isolation between the RS232 and RS422 / RS485 connections. With RS422 mode selected the interface can be configured for four-wire operation with CTS / RTS hardware handshaking. In RS422 mode the transmitter is always on. With RS485 mode selected the interface can be configured for four-wire full duplex operation or two-wire half duplex operation with optional echo back. The transmitter enable is controlled automatically with a turn-around delay of less than 20us. Optional RS422 / RS485 termination and bias resistors can also be configured. The RS232 interface on the ES-R-2101B-M can be configured to be a DCE or a DTE type. The default link settings select a DCE type which allows use of a straight-through DE-9S to DE-9P cable.
<p>No driver installation is required for ES-R series products</p>
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