Siemens Industry Online Support
Siemens AG
Entry type: Product note, Entry ID: 43614674, Entry date: 08/10/2010

Sales release and limited delivery release for SCALANCE XR324-4M PoE

  • Entry
  • Associated product(s)
The Industrial Ethernet 19" Rack Switches SCALANCE XR324-12M PoE (Power over Ethernet) with cable outlet at the front or rear and 1 x 24 V DC power supply are released for delivery by I IA SC IC with restrictions and are now available for delivery from stock.


The SCALANCE XR324-4M PoE is released with the following restrictions:


1. The following approvals are still pending:

  • cULus

  • cULus-HazLOC

  • FM

We expect that the approvals will be granted by E10/2010.

1. Product description

The SCALANCE X324-4M PoE is a powerful, industry-standard, Layer 2 Industrial Ethernet 19" rack switch that offers IT functions in addition to industry features. These switches are designed for applications in larger networks with different connection media and high port density of the network components, including connection to the enterprise network. Comprehensive redundancy functions (STP/RSTP/MRP, link aggregation), utilization as redundancy manager, as well as manifold management/diagnostics options (VLAN, Quality of Service, IGMP, RMON) permit high plant availability and user-friendly configuration.
SCALANCE XR324-4M PoE (4 media module slots)
  Versions are available with
• LEDs, data cable outlet on the front and power supply connection at the rear
• LEDs, power supply connection on the front and data cable outlet at the rear

All versions have four media module slots and an optional
• 1 x 24 V DC (24 V - 48 V) power supply



The SCALANCE XR-300 have the following interfaces:

Ethernet interfaces:
  16 permanently integrated electrical 10/100/1000 Mbit/s RJ45 ports, 8 of which support PoE in accordance with IEEE 802.3at Type 1 (corresponding to IEEE 802.3af). Up to 4 slots for 2-port media modules, electrical or optical (multimode or singlemode). The optical media modules are available with different connection options.

Electrical media modules: • Connection of up to 8 x electrical 10/100/1000 Mbit/s RJ45 ports for connecting stations and interconnecting the switches.

MM992-2CUC:        Electrical media module 2 x 10/100/1000 Mbit/s RJ45 ports with retaining collar
MM992-2CU:           Electrical media module 2 x 10/100/1000 Mbit/s RJ45 ports without retaining collar

Optical media modules:
• Connection of up to 8 x 100 or 1000 Mbit/s FOC ports, optical (multimode/singlemode, glass), for interconnecting SCALANCE XR-300 EEC switches or for connection to a higher-level backbone switch.


You will find information about the 2-port media modules under entry ID: 43512655


Other interfaces:
• Slot for optional C-PLUG swap medium on the side of the device for easy device replacement in the event of a failure
• 4-pole terminal block for redundant power supply for protection against voltage failure at 24 V DC.
• 2-pin terminal block for isolated signaling contact for simple display of faults
• The fault signaling contact can be easily set on the device by means of a SELECT/SET button.
• The status information is indicated by means of a row of LEDs (power, link status, data communication, power supply, signaling contact).
• Remote diagnosis is possible via a signaling contact, PROFINET, SNMP, web browser and CLI

Further technical characteristic
All ports of the SCALANCE XR-300 support Gigabit Ethernet. For the SCALANCE XR300, however, no "full wire speed" backplane architecture (all ports are simultaneously interconnected via Gigabit Ethernet) was selected. For the XR300, a "blocking architecture" was selected. 3 blocks with 8 ports each are interconnected in each case. Full wire speed is possible within the blocks. However, only 1 Gigabit Ethernet is used for connecting the blocks to each other. This technical characteristic is clearly indicated in the manual. When operating with Fast Ethernet (100 Mbit/s), no blocking takes place due to the described configuration of the SCALANCE XR-300.

2. Ordering data


Product name Order No.
SCALANCE XR324-4M PoE (1AR2) 6GK5324-4QG00-1AR2
SCALANCE XR324-4M PoE (1HR2) 6GK5324-4QG00-1HR2


3. Goal of application/customer benefits

The SCALANCE X324-4M PoE is ideal for use in plant networks and for integrating the industrial network into an existing corporate network. Both at the field level and the control level, the switch performs the networking with the distributed field devices and ensures high plant availability with extensive diagnostics options and high transmission rates. The modularity permits perfect adaptation to the respective application through the use of electrical and/or optical media modules.
The main area of application is found in high-performance plant networks with interfaces to the corporate network.

The SCALANCE X324-4M PoE switch is suitable for establishing optical Industrial Ethernet linear, star or ring topologies with 24 ports, 16 of which are integrated RJ45 ports. Up to four additional electrical and/or optical 2-port media modules can be inserted in the media module slots of the basic unit.
The switch can also be used as a star coupler in the plant bus (redundant connection is possible).


SCALANCE XR324-4M PoE customer benefits

  1. Flexibility and easy adaptation to the structure of a plant thanks to full modularity
  2. Reduced warehousing overhead/fewer versions need to be managed by the customer
  3. Facilitated installation due to cable outlet on the front or at the rear (e.g. at the cabinet door)
  4. High terminal density while requiring little space (one 19" height module)
  5. Power supply can be selected as required (24 V DC and AC wide-range power supply unit)
  6. Low mounting depth for 19" cabinets: thus with 80 cm deep control cabinets, two units requiring only one height module can be installed
  7. Simple connection of 100 Mbit/s FO networks using 100 Mbit/s FO technology

4. Miscellaneous




For further information, please visit our SCALANCE X-300 Product website.

The SCALANCE X-300 can be found in the catalog and the Mall.


To assist in selecting the right Industrial Ethernet switches as well as configuration of modular variants, the Switch Selection Tool is available as a free download: 39134641



Security information
In order to protect plants, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial security concept. Siemens’ products and solutions constitute one element of such a concept. For more information about industrial security, please visit