Specifications

DI 16x24VDC HF Digital Input Module (6ES7521-1BH00-0AB0)
Manual, 07/2014, A5E03485952-AD
5
Table of contents
Preface ................................................................................................................................................... 3
1 Documentation guide .............................................................................................................................. 6
2 Product overview .................................................................................................................................... 8
2.1 Properties .................................................................................................................................. 8
3 Wiring ................................................................................................................................................... 11
4 Parameters/address space ................................................................................................................... 14
4.1 Parameters ............................................................................................................................. 14
4.2 Address space ........................................................................................................................ 15
5 Interrupts/diagnostics alarms ................................................................................................................. 20
5.1 Status and error displays ........................................................................................................ 20
5.2 Interrupts ................................................................................................................................. 23
5.3 Diagnostics alarms .................................................................................................................. 24
6 Technical specifications ........................................................................................................................ 26
A Dimensional drawing ............................................................................................................................. 29
B Parameter data records......................................................................................................................... 31
B.1 Parameter assignment and structure of the parameter data records ..................................... 31
C Open Source Software .......................................................................................................................... 34