Siemens 6AV4530-1BC01-5HA0 SIMATIC OP 35

Common Error Codes & System Events

System Error 1

Configuration data missing or corrupted in the operator panel memory.
Reload the project configuration using ProTool or STEP 7 software. Perform a memory reset if necessary and re-download the project.

System Error 2

Communication error between the OP 35 and the connected PLC.
Check MPI or serial cable connections and termination resistors. Verify PLC address settings match the OP 35 configuration. Ensure the PLC is in RUN mode.

System Error 3

Overflow of the alarm buffer; too many alarms generated in a short period.
Acknowledge and clear pending alarms. Review the alarm configuration in ProTool to reduce alarm frequency or increase buffer size.

System Error 4

Recipe data error; recipe record cannot be read or written.
Check recipe configuration in the project. Verify that the PLC data blocks referenced by the recipe are correctly defined and accessible.

System Error 5

Internal watchdog timeout; the panel processor did not respond within the expected time.
Perform a power cycle on the OP 35. If the fault persists, reload the project configuration. Check for hardware faults and consider unit replacement if the issue recurs.

System Error 6

Display backlight failure or display hardware fault detected.
Check the backlight power supply connections internally. Replace the backlight unit or the display module if the screen remains blank or dim after power cycling.

System Error 7

Keypad input fault; one or more keys are not responding or are stuck.
Inspect the membrane keypad for physical damage or contamination. Clean the keypad surface. If keys remain unresponsive, replace the membrane keypad assembly.

System Error 8

Power supply voltage out of range; the 24 V DC supply is outside acceptable limits.
Measure the supply voltage at the panel power connector. Ensure the supply is within the 24 V DC nominal range. Check wiring and the external power supply unit.