CAN Wiring - A Practical Reference Guide
Common Mistakes to AVOID This drawing shows incorrect layouts. Understanding why they are wrong is as important as knowing the right way. Description: • Mistake A (Star Network): This is the most common installation error. You cannot simply branch the backbone out in multiple directions from a central point. Each branch would need terminators, resulting in too many on the network and causing signal chaos. • Mistake B (Excessive Drop Length): This drop cable exceeds the 6-meter maximum, which can cause signal reflections and data errors that are very difficult to diagnose. • Mistake C (Missing Terminator): Without a terminator at this end, signals will reflect back down the wire, corrupting all network data. *** MISTAKE A: Star / Multiple Backbones ***
MALE END TERMINATOR
120Ω
Safiery STAR Controller
Safiery Scotty Device
Safiery STAR Switch
120Ω FEMALE END TERMINATOR
12V DC Power 5A Max
PWR
120Ω END TERMINATOR
More than 2 terminators X
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*** MISTAKE B & C ***
Safiery STAR Controllers
X
**MISTAKE B: Drop > 6 meters.**
Safiery STAR Switch
Safiery STAR Switch
12V DC Power 5A Max
END TERMINATOR
X
120Ω
**MISTAKE C: No Terminator!**
PWR
FEMALE
Right Angle Tee Pieces can be used to form a backbone when only 2-3 components spread apart
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