Genuine SIEMENS 6GK7443-1EX41-0XE0 SIMATIC NET CP 443-1 EX41 - Industrial Automation Part

SIEMENS 6GK7443-1EX41-0XE0 CP 443-1 EX41 Ethernet Communication Module

SKU: 6GK7443-1EX41-0XE0 Category: Siemens

Description

SIEMENS 6GK7443-1EX41-0XE0 CP 443-1 EX41 Ethernet Communication Module | Replacement, Equivalent & Selection Guide

The SIEMENS 6GK7443-1EX41-0XE0 is a high-performance CP 443-1 EX41 Ethernet Communications Processor designed for the SIMATIC S7-400 PLC platform. It enables seamless Industrial Ethernet connectivity for process automation, SCADA integration, and peer-to-peer communication in demanding industrial environments. This page provides full technical specifications, compatible replacement models, application guidance, and sourcing information to help engineers and procurement teams make confident selection decisions.

Technical Specifications

Part Number: 6GK7443-1EX41-0XE0
Product Family: SIMATIC NET CP 443-1 EX41
Compatible PLC Platform: SIMATIC S7-400
Communication Interface: Industrial Ethernet (IEEE 802.3)
Transmission Rate: 10/100 Mbit/s (auto-sensing)
Protocols Supported: ISO, TCP/IP, UDP, S7 Communication, FETCH/WRITE, PROFINET IO (Controller)
Number of Connections: Up to 64 configurable connections
PROFINET IO Controller: Yes — supports up to 128 IO devices
Integrated Switch Ports: 2 × RJ45 (integrated 2-port switch)
Power Supply: Via S7-400 backplane bus
Operating Temperature: 0 °C to +60 °C
Storage Temperature: −40 °C to +70 °C
Dimensions (W × H × D): 25 mm × 290 mm × 210 mm (single-width module)
Weight: Approx. 850 g
Degree of Protection: IP20
Configuration Tool: STEP 7 / TIA Portal (with HSP)
Firmware: Upgradeable via SIMATIC NET CD
Certifications: CE, UL, cUL, FM, ATEX (Zone 2)

Compatible Replacement & Equivalent Models

When the 6GK7443-1EX41-0XE0 is unavailable or end-of-life, the following models offer functional equivalence or direct replacement capability. Always verify firmware, rack slot, and project configuration compatibility before substitution.

6GK7443-1EX30-0XE0 — CP 443-1 EX30; earlier generation, same S7-400 platform, 10/100 Mbit/s, no integrated PROFINET IO controller. Suitable for legacy projects without PROFINET IO requirements.
6GK7443-1EX40-0XE0 — CP 443-1 EX40; immediate predecessor to EX41, functionally near-identical, minor firmware differences. Direct drop-in for most applications.
6GK7443-1EX11-0XE0 — CP 443-1 EX11; earlier variant, 10 Mbit/s only, limited connections. Suitable only for low-bandwidth legacy systems.
6GK7443-1GX20-0XE0 — CP 443-1 Advanced; next-generation replacement with enhanced PROFINET IO, IT functions (FTP, HTTP), and expanded connection count. Recommended upgrade path for new projects.
6GK7443-1GX30-0XE0 — CP 443-1 Advanced G30; latest generation, full PROFINET IRT support, web diagnostics, and increased IO device count. Best long-term replacement for EX41.

Note: Third-party compatible modules from manufacturers such as Bachmann, Hilscher, or HMS may also provide functional equivalence in specific integration scenarios. Contact Konmask for compatibility assessment.

Why Choose the Original Model

Proven Reliability: The 6GK7443-1EX41-0XE0 has an established track record in continuous-process and discrete manufacturing environments worldwide.
Native STEP 7 Integration: Full hardware catalog support in SIMATIC Manager and TIA Portal ensures zero-configuration-risk deployment.
PROFINET IO Controller: Supports up to 128 PROFINET IO devices — critical for distributed I/O architectures.
Dual-Port Switch: Integrated 2-port switch enables line topology without additional network hardware, reducing BOM cost.
Broad Protocol Support: ISO, TCP/IP, UDP, S7 Comm, FETCH/WRITE, and OPC in a single module reduces gateway complexity.
Long Service Life: Designed for 24/7 industrial operation with wide temperature tolerance and IP20 protection.

Typical Applications

SCADA / DCS integration via Industrial Ethernet in oil & gas, chemical, and power generation plants
PROFINET IO controller for distributed field devices (remote I/O, drives, valves) in automotive assembly lines
Peer-to-peer S7 communication between multiple S7-400 CPUs in large-scale process control systems
MES / ERP data exchange using TCP/IP and FETCH/WRITE services in food & beverage and pharmaceutical manufacturing
Machine-to-machine communication in packaging, printing, and material handling systems
Redundant network topologies using ring or line configurations with integrated switch ports

System Compatibility

PLC Rack: SIMATIC S7-400 central rack (CR) and expansion rack (ER) — any slot except power supply slot
CPUs: All S7-400 CPUs (CPU 412, 414, 416, 417 series)
Engineering Software: SIMATIC Manager (STEP 7 V5.x) and TIA Portal V13 SP1+ (with HSP0116)
Network Topology: Star, line, ring (MRP), and tree via external switches
PROFINET Version: PROFINET V2.2 (RT Class 1 & 2); IRT not supported (use CP 443-1 Advanced for IRT)
IT Integration: Basic — no integrated web server or FTP server (available in CP 443-1 Advanced)

Selection Guide

Use the following criteria to determine whether the 6GK7443-1EX41-0XE0 is the right module for your project, or whether an alternative should be considered:

Choose 6GK7443-1EX41-0XE0 if: You have an existing S7-400 project configured for EX41, require PROFINET IO RT (Class 1/2) with up to 128 devices, and need a cost-effective, proven solution without IT functions.
Choose 6GK7443-1GX20-0XE0 (CP 443-1 Advanced) if: Your project requires FTP/HTTP server, expanded connection count (>64), or enhanced diagnostics. Ideal for new projects or major upgrades.
Choose 6GK7443-1GX30-0XE0 if: PROFINET IRT (isochronous real-time) is required for motion control or high-precision synchronization applications.
Choose 6GK7443-1EX40-0XE0 if: EX41 is unavailable and your project configuration is locked — EX40 is the closest functional predecessor with minimal reconfiguration.
Avoid EX30/EX11 for new projects: These earlier generations lack PROFINET IO controller capability and are approaching end-of-support.

Quality Assurance & Sourcing

Authenticity: All units sourced by Konmask.com are verified-original SIEMENS components. We do not supply counterfeit, refurbished-as-new, or unverified grey-market parts.
Inspection: Each module undergoes visual inspection, label verification, and functional power-on testing prior to dispatch.
Packaging: Shipped in original or equivalent ESD-safe anti-static packaging with desiccant to prevent moisture damage.
Documentation: Certificate of conformity and packing list provided with every order. Customs documentation available on request.
Warranty: 12-month warranty against manufacturing defects. DOA (Dead on Arrival) replacement within 7 business days.
Stock Status: Contact us for real-time availability. We maintain buffer stock for critical automation components to support urgent MRO requirements.

How to Order

Step 1: Confirm your S7-400 rack type, CPU firmware version, and STEP 7 / TIA Portal version to ensure full compatibility.
Step 2: Add the 6GK7443-1EX41-0XE0 to your cart, or contact us directly for bulk / project pricing.
Step 3: Provide your shipping address and preferred Incoterm (EXW, FOB Xiamen, CIF, DDP available).
Step 4: Payment via T/T bank transfer, PayPal, or trade credit (approved accounts). Pro-forma invoice issued within 1 business day.
Step 5: Dispatch within 1–3 business days for in-stock items. Express courier (DHL / FedEx / UPS) available for urgent orders.

For project quantities (>5 units), OEM/system integrator pricing, or technical pre-sales consultation, contact our team directly.

Replacement & Compatibility FAQ

Q: Can I replace 6GK7443-1EX41-0XE0 with 6GK7443-1GX20-0XE0 without reconfiguring my STEP 7 project?: A: Not directly. The GX20 (CP 443-1 Advanced) has a different hardware catalog entry. You will need to replace the module in the hardware configuration and re-download. However, most communication block (FC/FB) logic remains compatible.
Q: Is the 6GK7443-1EX41-0XE0 still in production?: A: SIEMENS has announced end-of-sale for the EX41 series. The recommended successor is the CP 443-1 Advanced (6GK7443-1GX20-0XE0 or GX30). Konmask maintains stock of EX41 units for MRO and spare-parts purposes.
Q: Can this module be used in an S7-300 rack?: A: No. The 6GK7443-1EX41-0XE0 is exclusively designed for the S7-400 backplane. For S7-300, use the CP 343-1 series (e.g., 6GK7343-1EX30-0XE0).
Q: Does the EX41 support PROFINET IRT?: A: No. The EX41 supports PROFINET RT (Class 1 and 2) only. For IRT (isochronous real-time), the CP 443-1 Advanced GX30 is required.
Q: What is the maximum number of PROFINET IO devices supported?: A: Up to 128 PROFINET IO devices can be configured under the CP 443-1 EX41 acting as IO Controller.
Q: Can I use two CP 443-1 EX41 modules in the same S7-400 rack?: A: Yes. Multiple CP 443-1 modules can be installed in the same rack (subject to rack slot and power budget constraints), enabling redundant or segmented network architectures.
Q: Is firmware upgrade possible in the field?: A: Yes. Firmware can be updated via SIMATIC NET CD using the Primary Setup Tool (PST) or STEP 7 hardware configuration download.