FANUC Alarm FRCE-153 — F/S SLC2 frmaing error (F:…)
Manufacturer wording — F/S SLC2 frmaing error (F:%d^1)
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC FRCE-153 (“F/S SLC2 frmaing error (F:…)”): Communication with the sensor board failed. First check: 1. Move the robot to a safe pose. Likely part: Sensor board (Sensor interface board).
Updated 2026-09-17 · LogrobotLM reference
Description
Communication with the sensor board failed.
Remedy
1. Move the robot to a safe pose. 2. Turn the controller OFF, then ON again. If this alarm occurs again, go to the next step. 3. Remove any sources of noise in the sensor system. Turn the controller OFF, then ON again. If this alarm occurs again, go to the next step. 4. Make sure that the shield lines of the cables are connected to the frame ground. Make sure that the peeled part of the cable in the cabinet is properly connected to the earth plate. If this alarm occurs again, go to the next step. 5. This alarm occurs when the number of errors exceeds the serial allowed number or the total allowed number. Therefore, this alarm can be avoided by increasing the serial allowed number (system var $CCS_GRP.$ALARMSERAL) or the total allowed number (system var $CCS_GRP.$ALARMTOTAL). If the alarm still occurs after increasing these numbers, go to the next step. 6. Replace the sensor board.
Part to check / replace
FANUC FRCE-153 points to the hardware below — start here before ordering.
Tap a part for every code that points to it — and verify the exact variant for your controller before ordering.
Related codes
Same hardware involved
Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →