Rs-232 Wiring - Emerson Rosemount 370XA System Reference Manual

370XA Gas Chromatograph
APRIL 2014
3.10.1

RS-232 wiring

•
•
•
•
The RS-232 protocol requires a three-wire connection,
including a ground and does not support multi-drop.
The communication pair should be individually shielded with
the shield connected at one end only.
There is no need to connect the RTS, CTS, or DTR terminals in
most applications.
The maximum recommended distance for reliable
communications with RS-232 is 50 feet (15 meters).
System Reference Manual
7P00370-H01
3 - 35