Read Access Only

What does 8.0.00.12 mean?

An attempt was made to write data to a parameter that is configured for read-only access. This parameter's value cannot be altered via communication, either by design or due to its current operational state. The write operation is rejected.

• PLC or HMI program attempting to modify a diagnostic parameter (e.g., motor current P0-02, DC link voltage P0-03) which is designed for monitoring only.
• Parameter is an internal status or calculated value (e.g., run-time hours P0-05) that the inverter automatically manages and cannot be manually overwritten.
• Attempting to write to a configuration parameter (e.g., P1-01 "Motor Rated Voltage") while the inverter is in a run state or not in a "stopped and ready" state where such writes are allowed.

Click steps to track your progress.

1. 1

   Consult the inverter's parameter manual to confirm the access rights (read/write) for the specific parameter that triggered the fault (e.g., verify if P0-02 is read-only).

2. 2

   Modify the PLC/HMI program to remove write attempts to read-only parameters, instead using them for monitoring purposes only.

3. 3

   If the parameter should be writable, ensure the inverter is in a safe, stopped, and parameterized state (e.g., "Ready" state, not "Run" state) before attempting the write operation.

4. 4

   Check for any parameter lock settings (e.g., P7-01 "Parameter Lock") that might be overriding the individual parameter's write access and temporarily disable if permitted.