
Table of contents
1 Introduction ........................................................................................................................................... 5
2 Safety notices ........................................................................................................................................ 9
3 Recommendations on network security.............................................................................................. 11
4 Description of the device..................................................................................................................... 17
4.1 Product overview ............................................................................................................... 17
4.2 Device views...................................................................................................................... 21
4.2.1 Device view of a 24 VDC variant ......................................................................................... 21
4.2.2 Device view of 240 VAC variant .......................................................................................... 22
4.2.3 Device view of a PoE variant............................................................................................... 23
4.3 Accessories........................................................................................................................ 24
4.4 LED display ........................................................................................................................ 27
4.4.1 Fault LED "F" ...................................................................................................................... 27
4.4.2 "RM" LED............................................................................................................................ 27
4.4.3 LED "L"............................................................................................................................... 27
4.4.4 Port LEDs "P" ...................................................................................................................... 27
4.5 RESET button ..................................................................................................................... 29
4.6 Combo ports...................................................................................................................... 31
4.7 Power over Ethernet .......................................................................................................... 32
4.7.1 Power and voltage range according to the standard............................................................ 32
4.7.2 PoE properties of the devices ............................................................................................. 32
4.7.3 Power transfer and pin assignment (ports P1 - P24) ............................................................ 33
4.7.4 Power transfer and pin assignment (ports P25 and P26) ..................................................... 34
4.7.5 Conguration..................................................................................................................... 34
5 Installation........................................................................................................................................... 35
5.1 Safety notices for installation ............................................................................................. 35
5.2 Types of installation ........................................................................................................... 39
5.3 19" rack mounting ............................................................................................................. 40
5.4 DIN rail mounting / wall mounting ..................................................................................... 42
5.5 Inserting and removing pluggable transceivers................................................................... 46
5.5.1 General notes for SFP transceivers...................................................................................... 46
5.5.2 Using a pluggable transceiver (SFP).................................................................................... 46
5.5.3 Removing a pluggable transceiver (SFP) ............................................................................. 47
6 Connecting up ..................................................................................................................................... 49
6.1 Safety when connecting up................................................................................................ 49
6.2 Industrial Ethernet ............................................................................................................. 51
6.2.1 Electrical............................................................................................................................ 51
6.2.2 Optical............................................................................................................................... 53
SCALANCE XR-300WG
Operating Instructions, 03/2021, C79000-G8976-C454-07 3