
SCALANCE M812, M816
Operating Instructions, 08/2018, C79000-G8976-C331-06 7
Preface ................................................................................................................................................... 3
1 Security recommendations...................................................................................................................... 9
2 Description of the device....................................................................................................................... 15
2.1 Product characteristics............................................................................................................15
2.2 Accessories.............................................................................................................................17
2.3 LED display.............................................................................................................................18
2.3.1 SCALANCE M812-1 ...............................................................................................................18
2.3.2 SCALANCE M816-1 ...............................................................................................................21
2.4 Terminals ................................................................................................................................24
2.5 SET button ..............................................................................................................................26
2.6 C-PLUG and KEY-PLUG ........................................................................................................28
3 Installation ............................................................................................................................................ 29
3.1 Securing the housing ..............................................................................................................30
3.2 Wall mounting .........................................................................................................................31
3.3 Installing on the DIN rail..........................................................................................................33
3.4 Installing on the S7-300 standard rail .....................................................................................34
3.5 Installing on the S7-1500 standard rail ...................................................................................35
3.6 Mounting on a pedestal...........................................................................................................36
4 Connecting up....................................................................................................................................... 39
4.1 Safety when connecting up.....................................................................................................40
4.2 Power supply ..........................................................................................................................42
4.3 Grounding ...............................................................................................................................44
4.4 Digital input/output ..................................................................................................................45
4.5 DSL interface ..........................................................................................................................48
4.6 Ethernet port ...........................................................................................................................49
4.7 Replacing the PLUG ...............................................................................................................50
5 Dimension drawings.............................................................................................................................. 53
5.1 SCALANCE M812-1 ...............................................................................................................53
5.2 SCALANCE M816-1 ...............................................................................................................55
6 Technical specifications ........................................................................................................................ 57
6.1 SCALANCE M812 \ M816 ......................................................................................................57
A Approvals.............................................................................................................................................. 61