Output Read-Back Error

What does 2002H mean?

This error indicates an output read-back malfunction, triggered by either an overload or an overheat condition within the output circuit of an I/O module with diagnostic functions. An overload occurs when current exceeds the rated value, typically due to a short-circuit in the output. An overheat condition arises from excessive internal module temperature, often a result of sustained overcurrent. Both scenarios pose a risk of ignition and burnout to the module's internal circuits.

• Short-circuit in the output circuit causing current to exceed the rated value.
• Output current exceeding the I/O module's rated output current.
• Internal module temperature rise due to sustained overcurrent in the output circuit.
• Connected load current failing to return below the module's rated level after an overload event.

Click steps to track your progress.

1. 1

   Identify and rectify any short-circuits in the output circuit. Measure the output current and verify it is below the module's rated output current.

2. 2

   Ensure the connected load's operating current is within the I/O module's specified output limits.

3. 3

   Perform a reset operation on the remote head module.

4. 4

   Cycle power to the remote head module (turn power off, then on).