Industrial Ethernet

Siemens Industrial Ethernet hardware provides the communication backbone for SIMATIC automation systems, connecting controllers, distributed I/O, drives, and operator interfaces across factory and process networks. The collection spans communications processors for SIMATIC S7-300, S7-400, S7-1500, and ET 200SP systems, SCALANCE unmanaged network switches, FastConnect cabling and connector components, and PROFINET-enabled operator panels across the SINUMERIK and SIMATIC HMI ranges.

PLC Direct supplies Siemens Industrial Ethernet hardware to customers, maintaining existing network infrastructures and sourcing replacement communications hardware across active, phase-out, and discontinued product lines. The collection covers 414 products, including CP modules, SCALANCE switches, IE FC cables and connectors, and PROFINET-enabled panels.

Where Siemens Industrial Ethernet Products Are Used

A failed communications processor or network switch doesn't just interrupt data flow; it can take an entire SIMATIC controller offline or isolate a section of distributed I/O from the automation system until a replacement is sourced. For facilities running SIMATIC S7-300 or S7-400 platforms, CP modules in the CP 343-1 and CP 443-1 families are often the only viable connection point to the plant network, and many of these modules now carry phase-out or cancellation lifecycle status, making independent stock availability critical.

Facilities and systems that depend on Siemens Industrial Ethernet hardware include:

• Manufacturing plants running SIMATIC S7-300 or S7-400 controllers requiring CP module connectivity for PROFINET IO or S7 communication
• SIMATIC S7-1500 and ET 200SP installations using CP 1543-1 and CP 1543SP-1 processors for secure Ethernet communication with VPN and firewall functions
• Industrial network infrastructure requiring SCALANCE XB-series unmanaged switches for star and line topologies
• SINUMERIK CNC installations using MCP 483 or MCP 310 machine control panels with PROFINET connectivity
• SIMATIC HMI mobile panel deployments using KTP700 and KTP900 series panels with PROFINET/Industrial Ethernet interfaces
• Maintenance teams replacing end-of-life CP modules in installed switchgear where OEM availability has ended

Siemens Industrial Ethernet Products

This collection covers communications processors, network switches, cabling infrastructure, and PROFINET-enabled operator panels across the Siemens Industrial Ethernet portfolio. All product families and confirmed part numbers are sourced from the live PLC Direct collection page.

Product Families

• CP 343-1 and CP 343-1 Lean — Communications Processors for SIMATIC S7-300: The CP 343-1 family connects SIMATIC S7-300 controllers to Industrial Ethernet via ISO, TCP/IP, UDP, and PROFINET IO. The CP 343-1 Lean (6GK7343-1CX10-0XE0) supports TCP/IP, UDP, SEND/RECEIVE, Fetch/Write, and S7 communication as a PROFINET IO device, with an integrated 2-port switch. The CP 343-1 (6GK7343-1EX30-0XE0) adds PROFINET IO controller capability. Both use dual RJ45 connections at 10/100 Mbit/s. Multiple variants across active (PM300), phase-out (PM400), and discontinued (PM500) lifecycle stages are available in this collection.
• CP 443-1 — Communications Processor for SIMATIC S7-400: The CP 443-1 connects SIMATIC S7-400 controllers to Industrial Ethernet via ISO, TCP/IP, UDP, and PROFINET IO. The CP 443-1 (6GK7443-1EX20-0XE0) includes an integrated real-time switch (ERTEC 400) and dual RJ45 ports at 10/100 Mbit/s, supporting S7 communication, Fetch/Write, SEND/RECEIVE, PROFINET IO controller, SNMP V2, and web diagnostics. Both CP 443-1 variants in this collection carry PM410 (product cancellation) lifecycle status, making independent stock the primary sourcing route for installed S7-400 systems.
• CP 1543-1 — Communications Processor for SIMATIC S7-1500: The CP 1543-1 (6GK7543-1AX00-0XE0) connects SIMATIC S7-1500 controllers to Industrial Ethernet with integrated security functions including VPN and firewall, supporting TCP/IP, ISO, UDP, S7 communication, IP Broadcast/Multicast, FTP client/server, email, IPv4/IPv6, and IEEE 802.1X (RADIUS) authentication. Single RJ45 connection at 10/100/1000 Mbit/s. Carries PM400 (announcement of phase-out) lifecycle status.
• CP 1543SP-1 — Communications Processor for SIMATIC S7-ET 200SP: The CP 1543SP-1 (6GK7543-6WX00-0XE0) connects SIMATIC ET 200SP distributed I/O systems to Industrial Ethernet with integrated firewall and VPN security, open IE communication via TCP/IP, ISO-on-TCP, and UDP, SINEMA Remote Connect with autoconfiguration, SNMPv1/v3, DHCP, secure email, IPv4/IPv6, and NTP time synchronization. Bus adapter required, ordered separately. Active lifecycle status (PM300).
• SCALANCE XB-000 Series — Unmanaged Industrial Ethernet Switches: The SCALANCE XB-000 series provides unmanaged switching for star and line network topologies at IP20 with 24 V power supply and LED diagnostics. Confirmed variants include:
  • SCALANCE XB005 (6GK5005-0BA00-1AB2): 5-port, 10/100 Mbit/s, RJ45, 24 V AC/DC
  • SCALANCE XB008 (6GK5008-0BA10-1AB2): 8-port, 10/100 Mbit/s, RJ45, 24 V AC/DC
  • SCALANCE XB004-1LDG (6GK5004-1GM10-1AB2): 4x RJ45 electrical (10/100/1000 Mbit/s) + 1x SC optical port (1000 Mbit/s, single-mode glass, up to 10 km), 24 V DC
• IE FastConnect Cables and Connectors: Field-wireable cabling and connector components for Industrial Ethernet infrastructure:
  • IE FC TP Standard Cable GP 2x2 (6XV1840-2AH10): PROFINET Type A, CAT 5E, 4-core shielded, sold by the meter (minimum 20 m, maximum 4000 m per delivery)
  • IE FC RJ45 Plug 180 2x2 (6GK1901-1BB10-2AA0 / 6GK1901-1BB10-2AE0): RJ45 connectors with rugged metal enclosure and FastConnect termination, 180° cable outlet, single units or 50-packs
  • IE FC M12 Plug PRO 2x2 D-coded (6GK1901-0DB20-6AA0): M12 connector with axial cable outlet for SCALANCE X208 PRO and ET 200 PRO PN
• SINUMERIK Machine Control Panels — PROFINET/Industrial Ethernet: Machine control panels for SINUMERIK CNC systems. Confirmed variants:
  • MCP 483C PN (6FC5303-0AF22-0AA1): 19" width, mechanical keys, 22 mm emergency stop, PROFINET
  • MCP 483 PN (6FC5303-0AF22-1AA1): 19" width, membrane keys, 22 mm emergency stop, PROFINET
  • MCP 483 IE (6FC5303-0AF22-1AA0): 19" width, membrane keys, Industrial Ethernet — PM490 (final year of support)
  • MCP 310C PN (6FC5303-0AF23-0AA1): 310 mm width, mechanical keys, PROFINET
  • MCP 310 IE (6FC5303-0AF23-1AA0): 310 mm width, membrane keys, Industrial Ethernet — PM490 (final year of support)
• SIMATIC HMI Mobile Panels — PROFINET/Industrial Ethernet: Mobile operator panels with integrated PROFINET/Industrial Ethernet interface. Confirmed variants:
  • KTP700 Mobile (6AV2125-2GB03-0AX0): 7.0" TFT, 800x480, key and touch, 8 function keys, PROFINET/IE
  • KTP700F Mobile (6AV2125-2GB23-0AX0): 7.0" TFT, 800x480, key and touch, 8 function keys, PROFINET/IE, key-operated switch, configurable emergency stop
  • KTP900F Mobile (6AV2125-2JB23-0AX0): 9.0" TFT, 800x480, key and touch, 10 function keys, PROFINET/IE, key-operated switch, configurable emergency stop

Available at PLC Direct

• CP 343-1 Lean and CP 343-1 communications processors for SIMATIC S7-300, across active, phase-out, and discontinued lifecycle stages
• CP 443-1 communications processors for SIMATIC S7-400 (PM410 cancelled — independent stock only)
• CP 1543-1 communications processors for SIMATIC S7-1500 with VPN/firewall security
• CP 1543SP-1 communications processors for SIMATIC S7-ET 200SP with VPN/firewall security
• SCALANCE XB005, XB008, and XB004-1LDG unmanaged Industrial Ethernet switches
• IE FC TP Standard Cable CAT 5E, PROFINET Type A, sold by the meter
• IE FC RJ45 Plug 180 2x2, single units and 50-packs
• IE FC M12 Plug PRO 2x2 D-coded for SCALANCE and ET 200 PRO PN installations
• SINUMERIK MCP 483 and MCP 310 machine control panels (PROFINET and Industrial Ethernet variants)
• SIMATIC HMI KTP700, KTP700F, and KTP900F Mobile panels with PROFINET/Industrial Ethernet interface

What to Know Before You Buy Siemens Industrial Ethernet Hardware

Replacing a communications processor or network component requires confirming compatibility with the installed SIMATIC platform, the lifecycle status of the original part, and the hardware condition grade.

Hardware condition options: We supply Siemens Industrial Ethernet hardware in surplus sealed, refurbished, and used conditions. For communications processors and network switches, surplus sealed units are factory-sealed stock, while refurbished units have been tested and verified to be functional.

Compatibility considerations: CP modules are platform-specific and not interchangeable across SIMATIC families. CP 343-1 variants connect to S7-300 racks only; CP 443-1 to S7-400 racks; CP 1543-1 to S7-1500; and CP 1543SP-1 to ET 200SP systems. Within the CP 343-1 range, the Lean variant supports PROFINET IO device mode only and cannot act as a PROFINET IO controller. The CP 1543SP-1 requires a bus adapter (ordered separately) for installation into the ET 200SP base unit.

Lifecycle status: A significant portion of the CP 343-1 and CP 443-1 range carries PM400 (phase-out), PM410 (cancellation), or PM500 (discontinued) lifecycle status. For these devices, independent stock is often the only available sourcing route. Always verify the lifecycle status of the original part number before expecting standard OEM availability.

Part identification: CP module part numbers encode the SIMATIC platform: 343 for S7-300, 443 for S7-400, 1543 for S7-1500/ET 200SP. For IE FC connectors, the part number suffix identifies the pack quantity. Confirm whether a single unit or multi-pack is required before ordering.

Warranty: All Siemens Industrial Ethernet hardware purchased from PLC Direct includes a standard 1-year warranty covering defects and functionality, applicable to surplus sealed, refurbished, and used products.