Multiple CPU Initial Communication Stage Error

What does 7003 mean?

This error indicates a lack of response from a target CPU module during the initial communication stage within a multiple CPU system. This diagnostic occurs at power ON or reset. If this error persists after basic troubleshooting, it suggests a potential hardware fault within one of the CPU modules. The system will stop.

• No response from the target CPU module during the initial communication stage in a multiple CPU system.
• Potential hardware fault of any CPU module if the error reoccurs after reset.

Click steps to track your progress.

1. 1

   Reset the CPU module and attempt to transition it to RUN mode again.

2. 2

   Verify the power supply and physical mounting of all CPU modules within the multiple CPU system.

3. 3

   Inspect the tracking cable connections for damage or incorrect seating if applicable to the system configuration.