1699

Common Causes

• Failed MITUTOYO linear scale 1 (internal EEPROM, CPU or photo-electronic error)
• Scale communication error from cable or connector damage
• Scale contamination causing read errors
• Scale over-speed from excessive axis velocity

Troubleshooting Steps

1. 1Read the code number shown with the alarm: code XXYYZZZZ = XX=scale status bits, YY=detailed scale error, ZZZZ=scale position data per 2 mm pitch.
2. 2Record the XXYYZZZZ code: XX is the scale status byte (bit7 alarm, bit6 communication error, bit0 set means the alarm occurred inside the MITUTOYO scale), YY gives the detailed error, and ZZZZ shows scale position data in 2 mm pitch units.
3. 3When XX is 88, read the YY bits: bit7 over speed, bit5 EEPROM error, bit4 CPU error, bit3 capacity error, bit2 photo-electron error, bit1 digit match error, bit0 initialize error, to learn what failed inside the scale.
4. 4When XX is 80, YY 43 means the scale does not respond and 44 means a scale ID error; check the scale cable, connector and wiring for breaks or poor contact and reseat them.
5. 5Clean the scale read head and tape if contamination is suspected, then cycle power and see whether the error returns on the same axis.
6. 6If the error persists with good cabling, replace linear scale 1 (MITUTOYO) as the manual's corrective action directs, then re-establish the axis reference.