
Table of contents
1 Introduction...................................................................................................................................................5
2 Safety notes................................................................................................................................................11
3 Recommendations on network security......................................................................................................13
4 Device description ......................................................................................................................................17
4.1 Product overview....................................................................................................................17
4.2 Product properties and device views .....................................................................................20
4.3 SET/SELECT button ..............................................................................................................23
4.4 LED display ............................................................................................................................24
4.5 C-PLUG..................................................................................................................................27
4.5.1 Area of application and function of the C-PLUG ....................................................................27
4.5.2 Removing and inserting the C-PLUG (compact housing) ......................................................28
5 Assembling .................................................................................................................................................31
5.1 Safety notices for installation .................................................................................................31
5.2 Installation ..............................................................................................................................33
5.3 Installing on an S7-300 standard rail......................................................................................33
5.4 Installation on a DIN rail .........................................................................................................34
5.5 Wall mounting ........................................................................................................................35
5.6 Installation of modular devices...............................................................................................36
5.6.1 Installation and removal of media modules............................................................................36
5.6.2 SFP installation in SFP media module...................................................................................41
6 Connecting .................................................................................................................................................43
6.1 Safety when connecting up ....................................................................................................43
6.2 Notes on commissioning ........................................................................................................45
6.3 Wiring rules ............................................................................................................................46
6.4 Grounding ..............................................................................................................................47
6.5 24 VDC signaling contact.......................................................................................................47
6.6 Connecting the external 24 VDC power supply .....................................................................48
7 Technical data ............................................................................................................................................51
7.1 Construction, installation and environmental conditions ........................................................51
7.2 Connectors and electrical data...............................................................................................53
7.3 Cable lengths .........................................................................................................................54
7.4 Other properties .....................................................................................................................55
SCALANCE X-300M PoE
Compact Operating Instructions, 11/2019, A5E02630810-13 3