5-1 Unit Settings.............................................................................................................................................................52

5-1-1 I/O Data Mapping ..........................................................................................................................................52

5-1-2 Slave Status Area Mapping ............................................................................................................................57

5-1-3 Data Exchange Method ..................................................................................................................................57

5-1-4 Fatal PLC error handling ..............................................................................................................................58

5-2 Input / Output Mailbox.............................................................................................................................................59

5-3 Control and status area .............................................................................................................................................60

5-3-1 Control words.................................................................................................................................................61

5-3-2 Status words ...................................................................................................................................................64

5-4 LEDs ........................................................................................................................................................................70