I/O Module Test Error (Channel Specific)

What does E3-273 mean?

A general test error has been reported by an I/O bus module on a specific channel. This indicates a failure during an internal diagnostic test, implying an issue with the module's hardware or firmware functionality related to that particular channel. This can compromise the reliability of the affected I/O.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Check the connected field device to the channel for proper operation.

2. 4

   If the error persists after these steps, consider replacing the I/O module.