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1.7.5 RS-422/RS-485 Specifications
The 8099 has balanced RS-485 line drivers and receivers that provide RS-422
and RS-485 compatible signals. The line drivers and receivers are designed
to operate with up to 1200 meters of twisted-pair cable. The transmitter can
be set for continuous on operation or it can be tristated when not transmitting.
Hardware handshaking is ignored when RS485 is enabled.
Modes
Transmitter always on (RS485 Mode Off) or
tristated when not transmitting (RS485 mode On)
Transmit +5 Vdc differential for binary 0 or On
Levels
-5 Vdc differential for binary 1 or Off
Receive
±0.2 Vdc minimum, ±25 Vdc maximum,
Levels
differential or single-ended input with other input line
biased at mid-range.
Signals
SD, RD, RS, CS, RR and TR signal pairs
(SD and RD only when RS485 mode On)
Termination Internal Pullup, termination and pulldown resistor
Network network available on serial connector.
Содержание 8099
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