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6. TROUBLESHOOTING
6.2 Scale error (AL. 2A) details classified by linear scale manufacturer
When the occurrence cause of alarm 2A is unknown, contact the linear scale manufacturer after
confirming the scale error details in the following table on the basis of the alarm detail information of the
alarm history display on the MR Configurator.
Scale Error (Alarm 2A) Details
Detail
Information Bit
Mitutoyo Sony Precision Technology Heidenhain Renishaw
Bit7 Optical overspeed Overspeed error
Bit6 ROM RAM error Overspeed
Bit5 EEPROM error Encoder alarm EEPROM error
Bit4 CPU error CPU error
Bit3 Capacitive error ABS data error
Bit2 Photoelectric error INC data error
Bit1
Photoelectric
capacitive
data mismatch
Encoder warning
Scale level error
INC/ABS data mismatch error
Level error
Bit0 Initialization error Initialization error
Example in which alarm 2A occurred on Mitutoyo make linear scale AT343A
larm details : 44h
When the alarm detail information of alarm 2A is 44h, bit 6 and bit 2 are on as indicated below,
indicating that the ROM
RAM error and photoelectric error occurred.
Use this information when contacting the scale manufacturer.
bit7 bit6 bit5 bit4 bit3 bit2 bit1 bit0
44h = 0 1 0 0 0 1 0 0
4 4
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