The Siemens 6GK7443-1EX11-0XE0 is a CP 443-1 Communications Processor designed to connect the SIMATIC S7-400 PLC system to Industrial Ethernet networks.
Important Lifecycle Warning
This specific module is discontinued and obsolete. Siemens declared it a mature product on October 1, 2008, and ceased active manufacturing on October 1, 2009.
- Official Replacement: The recommended successor module is the CP 443-1 EX20 (6GK7443-1EX20-0XE0).
- Note on Upgrading: The newer EX20 model includes dual RJ45 ports and PROFINET IO controller features, but it lacks the older AUI network connection present on the EX11.
Technical Specifications
If you are troubleshooting, configuring, or looking to replace an existing unit, here are its primary features:
| Parameter | Specifications |
|---|---|
| Compatible System | SIMATIC S7-400 |
| Transmission Rate | 10 / 100 Mbit/s (Fast Ethernet) |
| Physical Interfaces | RJ45 and AUI |
| Supported Protocols | ISO, TCP/IP, UDP, S7 Communication |
| Services | Send/Receive (with/without RFC1006), Fetch/Write, Multicast |
| Time Synchronization | NTP (Network Time Protocol) |
| Security/Protection | IP Access Control List (ACL) |
| Dimensions & Weight | 25 x 290 x 210 mm | 700 grams |
Commercial & Availability Status
Because it is a legacy item, brand-new pieces directly from Siemens are no longer available. However, you can still source them via surplus automation distributors or repair services:
- Local Options: You can inspect regional availability or download technical manuals directly via the Siemens Industry Online Support Portal or check regional suppliers like GEASB.
Are you looking to buy a replacement spare part, trying to troubleshoot an existing network configuration issue, or planning an upgrade to a newer PLC system? Let GEASB know so we can give you the right technical guidance or documentation.
