
SCALANCE M812, M816
Operating Instructions, 08/2016, C79000-G8976-C343-04 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 ................................................................................................................................23
2.5 SET button ..............................................................................................................................25
2.6 C-PLUG and KEY-PLUG ........................................................................................................27
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 ..........................................................................................................................47
4.6 Ethernet port ...........................................................................................................................48
4.7 Replacing the PLUG ...............................................................................................................49
5 Dimension drawings.............................................................................................................................. 51
5.1 SCALANCE M812-1 ...............................................................................................................51
5.2 SCALANCE M816-1 ...............................................................................................................53
6 Technical specifications ........................................................................................................................ 55
6.1 SCALANCE M812 \ M816 ......................................................................................................55
A Approvals.............................................................................................................................................. 59