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The Siemens 6GK7443-1EX41-0XE0 communication processor (CP) adds Ethernet connectivity to SIMATIC S7-400 PLCs. This module enables high-speed data exchange over PROFINET and standard Ethernet networks. The unit supports ISO-on-TCP, UDP, and S7 communication protocols for flexible integration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Product Type | Communication processor (CP) |
| Model | CP 443-1 (EX41) |
| Compatibility | SIMATIC S7-400 |
| Network Interfaces | 1 x RJ45 (Ethernet), 1 x PROFINET |
| Transmission Rate | 100 Mbps (full duplex) |
| Supported Protocols | ISO-on-TCP, UDP, S7, SNMP, TCP/IP |
| Communication Services | S7 communication, open communication |
| Number of Connections | Up to 128 (concurrent) |
| Dimensions (W x H x D) | 233 x 160 x 40 mm |
| Weight | 0.6 kg |
| Internal Components | 1 x Ethernet controller, 2 x memory buffers, 1 x processor |
| Memory (RAM) | 512 KB (data buffering) |
| Diagnostic Buffer | 256 bytes (fault logging) |
| LED Indicators | 8 x LEDs (status and diagnostics) |
| Bus Connector | S7-400 backplane (plug-in) |
| Power Supply | 5V DC (from backplane) |
| Power Consumption | 5V / 1.2A (typical) |
| Operating Temperature | 0°C to +60°C |
| Storage Temperature | -40°C to +85°C |
| Protection Class | IP20 |
| Mounting | S7-400 rack (plug-in) |
| Approvals | CE, UL, CSA, ATEX (Zone 2) |
High-Speed Ethernet Connectivity
The Siemens 6GK7443-1EX41-0XE0 provides 100 Mbps full-duplex Ethernet communication for S7-400 systems. This speed ensures rapid data exchange between PLCs, HMIs, and other network devices. The module supports both PROFINET and standard Ethernet protocols on the same interface. Users can connect the CP directly to enterprise or plant networks.
Multi-Protocol Support for Flexible Integration
The communication processor handles ISO-on-TCP, UDP, S7, and TCP/IP protocols seamlessly. This versatility allows integration with Siemens and third-party systems. The module supports open communication for connecting to IT networks and databases. Users can configure the CP for various communication tasks without additional hardware.
High Connection Capacity for Complex Networks
The CP 443-1 EX41 supports up to 128 concurrent connections to remote devices. This capacity accommodates large distributed automation architectures. Users can connect multiple HMIs, drives, and other PLCs simultaneously. The module maintains stable communication performance even under heavy network loads.
Advanced Diagnostics for Simplified Troubleshooting
Eight LEDs provide immediate visual feedback on module and network status. The LEDs indicate power, bus activity, communication readiness, and error conditions. The diagnostic buffer stores 256 bytes of fault data for analysis. Users can access diagnostic information through STEP 7 or TIA Portal.
Robust Memory Buffering for Data Integrity
Internal 512 KB RAM buffers data during transmission to prevent packet loss. This buffer ensures reliable communication even during high-traffic periods. The memory handles both send and receive queues efficiently. Users can configure buffer sizes to optimize performance for specific applications.
Seamless S7-400 Rack Integration
The module plugs directly into the S7-400 backplane for easy installation. This integration eliminates the need for external power supplies or wiring. Users can insert or remove the CP while the system remains partially operational. The module occupies one slot in the S7-400 rack for efficient space utilization.