FANUC Alarm PNT1-746 — Pump 1 totals differ > tolerance
Manufacturer wording — %sPump 1 totals differ > tolerance
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC PNT1-746 (“Pump 1 totals differ > tolerance”): The actual total flow out of pump #1 as measured by the fluid flow meter has a value that is different than the commanded total flow. First check: Perform a fluid flow test on pump #1 with a beaker and verify that the beaker amount matches the pump #1 size (cc/rev).
Updated 2026-09-17 · LogrobotLM reference
Description
The actual total flow out of pump #1 as measured by the fluid flow meter has a value that is different than the commanded total flow. This difference is larger than the total flow tolerance.
Remedy
Perform a fluid flow test on pump #1 with a beaker and verify that the beaker amount matches the pump #1 size (cc/rev). Verify that the correct KFT factor has been entered for the fluid flow meter per the manufacturer's specification. Check the operation of the inlet regulator to verify that no blow by is occurring across the pump. Verify that pump #1 does not have excessive wear.
Related codes
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 →