XStream™OEMRFModule–ProductManualv5.x00[2006.02.24]
Wiring Diagram: RS-422
FigureB‐21.XStreamModuleAssemblyinanRS‐485(4‐wire)environment
RS onnection Guidelines
-485/422 C
The RS-485/422 protocol provides a solution for wired communications that can tolerate high
oise and push signals over long cable lengths. RS-485/422 signals can communicate as far as
4000 feet (1200 m). RS-232 signals are suitable for cable distances up to 100 feet (30.5 m).
odes can be connected. The RS-422
Suggestions for integrating the XStream Module with the RS-485/422 protocol:
n
RS-485 offers multi-drop capability in which up to 32 n
protocol is used for point-to-point communications.
1. When using Ethern twisted pair cabling: Select wires so that T+ and T- are connected to et
each wire lect wires so that R+ ected to a in a twisted pair. Likewise, se and R- are conn
twisted pair. (For example, tie the green and white/green wires to T+ and T-.)
2. r straight-through Ether cross-ov Fo ne nott cable ( er cable) – The following wiring pattern
works well: Pin3 to T+, Pi to R-, Pin6 to T- n4 to R+, Pin5
3. te that th ecting cabl equires 4 wNo e conn e only r ires (even though there are 8 wires).
4. en using phone cabling n2 in the cable maps to Pin3 on opposite end of cable Wh (RJ-11) – Pi
and Pin1 map Pin4 ress to pectively.
Figur ‐22Mal )DB‐9to pters
igureB‐23.Female(green)DB‐9toRJ‐45Adapters
eB e(yellow RJ‐45Ada
F
©2006MaxStream,Inc.ConfidentialandProprietary 61
Downloaded from Elcodis.com electronic components distributor
To Next Page
Loading...
