SIMATIC CM 1242-5
Operating Instructions, 01/2023, C79000-G8976-C245-06
7
Table of contents
Preface ................................................................................................................................................... 3
1 Application and properties .................................................................................................................... 9
1.1 Connecting the S7-1200 to PROFIBUS .................................................................................. 9
1.2 Communications services of the CM ..................................................................................... 9
1.3 Performance data .............................................................................................................. 10
1.4 Requirements for operation ............................................................................................... 10
1.5 Configuration examples for PROFIBUS ................................................................................ 11
2 Displays and connectors ...................................................................................................................... 13
2.1 Opening the covers of the housing ..................................................................................... 13
2.2 LEDs .................................................................................................................................. 14
2.3 Electrical connections ........................................................................................................ 16
3 Installation, connecting up, commissioning ....................................................................................... 17
3.1 Important notes on using the device .................................................................................. 17
3.1.1 Notices on use in hazardous areas ...................................................................................... 17
3.1.2 Notes on use in hazardous areas according to ATEX / UKEX / IECEx / CCC-Ex ........................ 17
3.1.3 Notes on use in hazardous areas according to UL HazLoc and FM ........................................ 18
3.2 Installation, removal and repairs in hazardous areas ........................................................... 19
3.3 Installing, connecting and commissioning .......................................................................... 20
3.4 Note on operation ............................................................................................................. 24
3.5 Disassembly ....................................................................................................................... 25
4 Configuration and program blocks ...................................................................................................... 27
4.1 Configuration .................................................................................................................... 27
4.2 DP data exchange with the CPU.......................................................................................... 28
4.3 New slave address with data record 0x2001 ....................................................................... 28
5 Diagnostics and upkeep ...................................................................................................................... 31
5.1 Diagnostics ........................................................................................................................ 31
5.1.1 Diagnostics options ............................................................................................................ 31
5.1.2 DP slave diagnostics ........................................................................................................... 32
5.1.3 Standard diagnostics .......................................................................................................... 33
5.1.4 Device-specific diagnostics in DP-V1 ................................................................................... 35
5.1.5 Device-specific diagnostics in DP-V0 ................................................................................... 38
5.2 Maintenance ..................................................................................................................... 39
5.2.1 Downloading firmware ...................................................................................................... 39
5.2.2 Module replacement .......................................................................................................... 40
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