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V2 AC500 Hardware 1-2 System data AC500 / Issued: 05.2007
Wiring......................................................................................................................................................1-32
Number of user data, bus cycle time and data security .........................................................................1-32
Replacement of modules on the I/O bus ...............................................................................................1-33
Serial interfaces of the CPU Terminal Bases ................................................................................ 1-33
Interface standard................................................................................................................................... 1-33
Technical data......................................................................................................................................... 1-33
Serial interface COM1.......................................................................................................................... 1-33
CS31 system bus................................................................................................................... 1-35
Connection of the AC500 CPU to the CS31 system bus using COM1 of the Terminal Base ...............1-35
Wiring......................................................................................................................................................1-36
Bus topology ...........................................................................................................................................1-36
Earthing................................................................................................................................................... 1-38
Number of user data, bus cycle time and data security .........................................................................1-39
Replacement of modules on the CS31 system bus ............................................................................... 1-39
Serial interface COM2 ........................................................................................................... 1-40
FieldBusPlug / FBP
.............................................................................................................................. 1-42
Wiring......................................................................................................................................................1-42
Bus topology ...........................................................................................................................................1-42
Modbus.................................................................................................................................................... 1-43
General ................................................................................................................................................... 1-43
Bus topology ...........................................................................................................................................1-43
Number of user data, bus cycle time and data security .........................................................................1-43
PROFIBUS .............................................................................................................................................. 1-44
ISO/OSI model........................................................................................................................................ 1-44
Typical Field Bus Topologies.................................................................................................................. 1-45
Overview of transferred data ..................................................................................................................1-46
PROFIBUS DP-V0 <---> PROFIBUS DP-V1.......................................................................................... 1-46
Wiring......................................................................................................................................................1-49
Bus line ...............................................................................................................................................1-49
Cable lengths ...................................................................................................................................... 1-49
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