BECKHOFF EtherCAT Technology Section I - Manual (Page 9)

CONTENTS
Slave Controller – Technology I-IX
15.2 ERR LED 88
15.2.1 ERR LED override 88
15.3 STATE LED and STATE_RUN LED Signal 89
15.4 LINKACT LED 89
15.5 Port Error LED (PERR) 90
16 Process Data Interface (PDI) 91
16.1 PDI Selection and Configuration 91
16.2 PDI register function acknowledge by write 92
16.3 General Purpose I/O 93
16.3.1 General Purpose Inputs 93
16.3.2 General Purpose Output 93
17 Additional Information 94
17.1 ESC Clock Source 94
17.2 Power-on Sequence 94
17.3 Write Protection 95
17.3.1 Register Write Protection 95
17.3.2 ESC Write Protection 95
17.4 ESC Reset 95
18 Appendix 96
18.1 Support and Service 96
18.1.1 Beckhoff’s branch offices and representatives 96
18.2 Beckhoff Headquarters 96