Siemens A0702 fault code meaning
Siemens / A0702
Series: G120-CU240B-E-2
Check the connectors, cables, and PROFIBUS master
converter
Meaning:
Possible causes
Source: Getting Started Guide G120 Control Units CU240E P30
Series: MM420
CB alarm 3
converter
Meaning:
Possible causes
Source: 420 P67
Series: MM430
CB alarm 3
converter
Meaning: Link interruption with PROFIBUS.
Possible causes
Source: Parameter List_ MICROMASTER 430 P262
Series: MM440
CB alarm 3
converter
Meaning: For CB (communication board) only
Possible causes
Source: Parameter Table_ MICROMASTER 440 P321