The IBH Link S5++ is a cost-efficient Ethernet converter that provides a modern alternative to traditional CP communication processors for connecting legacy SIMATIC S5 PLCs to Ethernet networks. Encased in a compact 15-pin Sub-D housing, it plugs directly into the standard PU port of an S5 CPU and enables TCP/IP communication with PCs, HMIs, and SCADA systems[reference:24][reference:25].

Under normal operation, the device draws power directly from the PLC, eliminating the need for an external power supply. For passive PLCs or when additional power is required, an external 8~30V DC source can be connected via the integrated terminal[reference:26][reference:27]. A set of diagnostic LEDs provides clear status indication for Ethernet link activity, speed, and device readiness[reference:28].

The IBH Link S5++ supports multiple communication protocols to serve a wide range of applications. Standard TCP/IP enables basic PC connectivity for programming and configuration. For HMI integration, the device supports the RFC1006 protocol, allowing modern S7 HMI panels to read and write variables from the S5 PLC as if it were an S7 controller[reference:29]. The FETCH/WRITE protocol is also supported for legacy HMI systems[reference:30]. All services can operate in parallel, with the communication load shared over the AS511 port's 9600 baud connection[reference:31].

Remote maintenance is a key advantage of the IBH Link S5++. Once connected to a network, the device can be accessed via standard routers, VPN connections, or even direct Internet links, enabling off-site programming, diagnostics, and troubleshooting[reference:32]. The device comes with comprehensive software support, including drivers for STEP5 V7.16 and higher, S5 for Windows, and compatibility with the IBH OPC Server[reference:33]. An application programming interface with code samples in Visual Basic, C#, Java, and other languages is included for custom HMI development[reference:34].

Applications

The IBH Link S5++ is ideally suited for:

• Modernizing legacy S5 systems with Ethernet connectivity
• Integrating S5 PLCs with modern SCADA and HMI systems
• Enabling remote programming and maintenance of S5 controllers
• Replacing obsolete CP communication processors with a cost-effective solution
• Industry 4.0 retrofits requiring data acquisition from S5 PLCs

Technical Specifications