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Bidirectional Communication, Single Computer, Multiple VC4™'s over a two-wire system.
Interface
RS-232 P/N 874327-R Rear Panel Mount
Computer
Customer-supplied; check user device for compatibility before ordering.
Port
User-supplied. Refer to diagram for pinout configuration. Drop distance
Cable
between the VC4™ and the daisy-chain cable should be as short as possible
(less than three feet).
Customer-written per information in "Serial Communications Protocol" on
Protocol
page 132
Refer to the computer port documentation for specific pinout information for
the computer's RS485 interface.
Note
RS485 ports are limited to 32 nodes due to drive-level limitations. The
number of nodes per port can be extended up to 255 by use of RS485
repeaters.
VC4™
Multiple VC4™ monitors and a single computer
Bi-Directional Communication over a 2-wire system
176
User Manual
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