AN ACR MLG ABORTED ITS TKOF WHEN IT DID NOT GET THE PWR THAT THE CREW THOUGHT THAT IT NEEDED.

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AFTER BEING DEICED; WE TAXIED TO RWY 35L. PRIOR TO TKOF WE DISCUSSED TARGET N1 RPM WITH THE FMC SHOWED AS 97.9 PERCENT. IT WAS THE COPLT'S LEG. HE PUSHED THE THROTTLES FORWARD AND PUSHED THE 'TOGA' BUTTON AND THE AUTO THROTTLES CAME ON. THE RPM STOPPED ACCELERATING AT 95.0 PERCENT. I MANUALLY PUSHED THE THROTTLE FORWARD BUT THE ENGS WOULD NOT ACCELERATE ABOVE 95.0 PERCENT SO I ABORTED THE TKOF. I FIRST THOUGHT THERE MUST BE ICE ON THE ENG PROBES; BUT WHEN WE CALLED MAINT THEY SAID TO CHK THE TEMP IN THE FMC TKOF PAGE. WE FOUND THE 21 DEGS TO BE IN THE CENTIGRADE COLUMN INSTEAD OF THE FAHRENHEIT COLUMN. WE THEN INSERTED IT CORRECTLY AND THE TARGET N1 RPM DROPPED TO 93.6 PERCENT. WE WENT BACK TO THE GATE. WE HAD THE AIRPLANE INSPECTED. THEN DEPARTED NORMALLY. CALLBACK CONVERSATION WITH REPORTER REVEALED THE FOLLOWING: THE RPTR ADMITS THAT THERE WAS NO PROB WITH HIS ACFT. IT WAS JUST THE DEGS CENTIGRADE VERSUS DEGS FAHRENHEIT PROB. THE RPTR BELIEVES THAT THE CREW MUST INSERT DEGS FAHRENHEIT OR THE FMC WILL REVERT TO DEGS CENTIGRADE. AS SOON AS HE RETURNED TO THE LINE; THE MECH AND THE PLT'S FLT MGR KNEW EXACTLY WHAT HAD HAPPENED AS IT HAS HAPPENED BEFORE; POSSIBLY THAT DAY. THE RPTR WAS THINKING THAT THERE MIGHT HAVE BEEN SERIOUS ICING PROBS; SIMILAR TO THOSE WHICH KNOCKED A SIMILAR ACR FLT OUT OF THE SKY. THE FMC WILL NOT LET THE FLC PUT ON MORE PWR THAN THE AMBIENT TEMP WILL ALLOW -- YOU CANNOT OVERSPD THE ENG.