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Chapter 3 l l Operation
14
3.2 Multidrop
Multidrop configuration means that more than two devices
(Max. 10 for RS-422; Max. 32 for RS-485) can be linked all
together to communicate one another through many A50 (or
A51) devices. In this configuration, one of the A50 (or A51)
will be connected to a master device and the rest of A50 (or
A51) devices will be connected to any other slave devices.
4-wire Full Duplex
A50/A51
RA
RB RS-485 RS-232
TB
TA
GND
Slave
DTE/
DCE
A50/A51
RS-232
TA
RS-485 TB
RB
RA
GND
Master
DTE/
DCE
A50/A51
RA
RB RS-485 RS-232
TB
TA
GND
Slave
DTE/
DCE