Inspect fiber optic cables for breaks or poor connections. Identify the disrupted node. Address Recognition
: Requires a reset or power cycle after fixing the root cause.
| Code | Display Indication | Root Cause | Immediate Action | | :--- | :--- | :--- | :--- | | | Internal 5V Rail Fault | Voltage regulator failure on mainboard; short circuit on a plugged module. | Remove all peripheral modules (SERCOS, I/O). Power cycle. If F01 clears, add modules one by one to find the short. | | F03 | Battery Low / CMOS Fail | Lithium battery below 2.7V; clock retention lost. | Replace battery (Type CR2032 or VARTA 3V). Reproject firmware clock. Note: This is a warning, not a hard stop. | | F07 | Watchdog Timer Expired | CPU stuck in infinite loop; severe EMI (electromagnetic interference) on the backplane. | Check for high voltage cables running parallel to Ethernet/SERCOS cables. Run a RAM memory test via IndraWorks. | | E-04 | RAM Checksum Error | Failed SDRAM bit; corrupted application loaded via USB. | Clear RAM via DIP switch SW1-2. Reload firmware from SD card. If recurring, replace mainboard. | rexroth ppc-r22.1 fault codes
Understanding the fault codes is essential for maintaining the performance and reliability of your automated systems. The PPC-R series is a powerful CNC and motion control platform, and the R22.1 version uses specific diagnostic codes to communicate internal hardware issues, software errors, or external communication failures.
The fiber optic ring is broken or a slave device is not responding. Overvoltage Error Inspect fiber optic cables for breaks or poor connections
: The drive failed to transition from SERCOS phase 3 to phase 4, often due to invalid configuration parameters. IndraWorks , which lists the specific invalid parameters. F21 to F23: Debugging & Spare Parts Errors
Check the light intensity settings if you have long cable runs. 2. Verify Power Supplies | Code | Display Indication | Root Cause
Fault codes on the PPC-R22.1 are generally grouped into several functional categories: