Modules And Accessories
3.113
Multi-drop Operation
The OPT-700 can also be used for multiple drops by forming a ring configuration. In this way when a
Master modem transmits the signal all of the Slave devices are able to receive the information.
The Master OPT-700 will be in the “Do Not Repeat” mode Switch#2 OFF while all SLAVES require
Switch #2 set to the ON position (Repeat Mode.)
To RS
Master
Switch#2
OFF
To RS
Slave 1
Switch#2
ON
To RS
Slave n
Switch#2
ON
Figure 3.72 - Multi- Drop operation
RS-232 CONNECTOR
PIN FUNCTION
1 Shield
2 Receives
3 Transmits
7 Ground (Reference Signal)
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