Siemens A01256 fault code meaning
Siemens / A01256
Series: G120-CU250S-2, G130-G150, S120-S150
CU: Data read/write error on option board EEPROM
converter
Meaning: A fault occurred while reading the read/write data of EEPROM on the plug-in board.
Possible causes
Source: SINAMICS G120, Control Unit CU250S-2 P1292; SINAMICS G130_G150 P1454; SINAMICS S120_S150 P2530
Series: G200, G210, G210X, G220
Option board EEPROM data read/write error
converter
Meaning: A fault occurred while reading the read/write data of EEPROM on the option board.
Possible causes
Source: SINAMICS G200 converter P620; SINAMICS G210 converter P992; SINAMICS G210X converter P860; SINAMICS G220 converter P1193
Series: S200
CU: Option board EEPROM data read/write error
servo drive
Meaning: A fault occurred while reading the read/write data of EEPROM on the option board.
Possible causes
Source: SINAMICS S200 PROFINET_SIMOTICS S-1FL2 P461
Series: S220
CU: Option board EEPROM data read/write error
converter
Meaning: A fault occurred while reading the read/write data of EEPROM on the option board.
Possible causes
Source: SINAMICS S220 Converter P2079