Pin Connection Issues:
• Incorrect pin wiring or poor contact
• Leads to signal interruption or unstable transmission
Shield Grounding Fault:
• Ungrounded shield layer of cable
• Reduces anti-interference capability significantly
Terminal Resistor Missing:
• No 120Ω terminal resistor at both ends of the bus
• Causes signal reflection and communication failure
Strong Electrical Interference:
• Interference from high-voltage power lines
• Solution: Use shielded cables for bus wiring
Technical Note: When troubleshooting bus faults, first check pin connection and 120Ω terminal resistors, then verify shield grounding and use shielded cables to avoid strong electrical interference for stable communication.
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