
Table of contents
Preface ................................................................................................................................................... 3
1 Safety notices ........................................................................................................................................ 9
2 Security recommendations.................................................................................................................. 11
3 Description of the device..................................................................................................................... 19
3.1 Product characteristics ....................................................................................................... 19
3.2 Device view ....................................................................................................................... 20
3.3 Scope of delivery ............................................................................................................... 20
3.4 Accessories ........................................................................................................................ 21
3.4.1 PLUG ................................................................................................................................. 22
3.4.2 Installation ........................................................................................................................ 22
3.5 Terminals........................................................................................................................... 23
3.6 LED display ........................................................................................................................ 24
3.7 SET button......................................................................................................................... 26
3.8 PLUG ................................................................................................................................. 27
4 Installation and removal...................................................................................................................... 31
4.1 Safety notices for installation ............................................................................................. 31
4.2 Securing the housing......................................................................................................... 34
4.3 Wall mounting ................................................................................................................... 34
4.4 Installing on the DIN rail..................................................................................................... 36
4.5 Installing on the S7-300 standard rail ................................................................................. 37
4.6 Installing on the S7-1500 standard rail ............................................................................... 38
4.7 Mounting on a pedestal ..................................................................................................... 39
5 Connecting up ..................................................................................................................................... 41
5.1 Safety when connecting up................................................................................................ 41
5.2 Power supply ..................................................................................................................... 45
5.3 Grounding ......................................................................................................................... 46
5.4 Digital input/output ........................................................................................................... 46
5.5 SHDSL connection.............................................................................................................. 49
5.6 Ethernet port ..................................................................................................................... 53
5.7 Replacing the PLUG............................................................................................................ 54
SCALANCE M826
Operating Instructions, 10/2022, C79000-G8976-C362-07 7