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EIA-485 (communications, standard)
(Formerly "RS-485") An EIA
serial line standard
which specifies 2-wire,
, differential line
communications. Maximum cable length is 1200m. Maximum data
rates are 10Mbps at 1.2m or 100Kbps at 1200m. EIA-485 can
implement a truly multi-point communications network, and
specifies up to 32 drivers and 32 receivers on a single
Differential SCSI uses EIA-485.Details on RS-232, 422, 423, and 485
This article is provided by FOLDOC - Free Online Dictionary of Computing (foldoc.org)
RS-485A TIA/EIA standard for serial multipoint communications lines. It can be implemented with as little as a wire block with four screws or with DB-9 or DB-37 connectors. By using lower-impedance drivers and receivers, RS-485 allows more nodes per line than RS-422. See RS-232 and RS-232/485.
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References in periodicals archive
Features include EIA 485
Modbus serial communications, DeviceNet communications, infrared remote communications operation, user-definable menu system, and "save-and-restore" capability.
Modbus serial communications are utilized, enabling Ethernet/Internet connectivity, which allows the instantaneous exchange of information between processing equipment and a customer's management system.
It is based on EIA 485
with typically a 2 volt signal between the differential pair of wires.
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