ROVINS – User Manual
MU–ROVINS–AN–013 Ed. A – March 2012
25
V.6 ROVINS Recommended Wirings
The recommended wirings with Shielded Twisted Pairs for RS232 (Output and Input),
RS422 (Output and Input), and Pulse (Output and Input) cables are described hereafter.
Caution
I
F YOU DO NOT USE SHIELDED MULTI
-
TWISTED PAIRS YOU MAY ENCOUNTER CROSS
-
TALK
PROBLEMS BETWEEN INPUT AND OUTPUT
,
AND THIS MAY GIVE ERROR OR DYSFUNCTION
.
S
HIELD
LINK SHOULD BE DONE AT ONE END ONLY TO AVOID GROUND LOOPS UNLESS SHIELD IS USED AS
AN ELECTRICAL GROUND
.
Mechanical GND connection is recommended through connector backshell.
Pair shielding link
Shielded twisted pair
24 AWG or larger
Zc~100
Ω
Line Driver
RS422 TX(+) /RS232 TX(+)
GND
PC Terminal
(2) RX
(5) GND
Pin 11
ROVINS RS232 OUTPUT
Pin 8
Pin 12
External cable shielding link
All pins marked GND are common electrical ground and can be used indifferently.
Figure 10 - Description of mono-directional RS232 Output wiring (Port A example)
Pair shielding link
Shielded twisted pair
24 AWG or larger
Zc~100
Ω
RS422 TX(+) /RS232 TX(+)
GND
PC Termina
l
(3) TX
(5) GND
External cable shielding link
All pins marked GND are common electrical ground and can be used indifferently.
Mechanical GND connection is recommended through connector backshell
ROVINS RS232 INPUT
Pin 13 RS232 RX(+)
Pin 8 GND
Figure 11 - Description of mono-directional RS232 Input wiring (Port A example)
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