Connecting older DH+ PLC5s SLC-504s latest ethernet products

Connecting older DH+ PLC5s and SLC-504s to the latest Ethernet products can be achieved through the integration of compatible communication modules or converters. By bridging the legacy DH+ or DH-485 networks with Ethernet/IP, users can modernize their industrial automation systems without the need for complete overhauls.

These solutions enable communication between legacy PLCs and newer Ethernet-based devices, facilitating data exchange and enhancing interoperability within the industrial ecosystem.

Upgrading connectivity not only extends the lifespan of older equipment but also opens doors to leveraging advanced functionalities and analytics offered by contemporary technologies, optimizing operational efficiency and productivity.

Strategies for Integration:

1. Use of Communication Bridges or Gateways:
   • Devices like gateways or network bridges can be used to connect older PLC systems to Ethernet networks. These devices act as intermediaries, translating the DH+ or Remote I/O protocols to Ethernet/IP.
   • Popular choices include ProSoft Technology modules or the Rockwell Automation 1784-U2DHP, which convert DH+ to USB, and then a USB to Ethernet converter can be used if necessary.
2. Ethernet Modules for Legacy PLCs:
   • Some legacy PLCs may have the option to install an Ethernet module directly. For example, certain PLC-5 models can accommodate an Ethernet sidecar module, allowing direct Ethernet connectivity.
   • It’s essential to check the specific model for compatibility and availability of such modules.
3. Upgrading Firmware:
   • In some cases, updating the firmware of the older PLCs can provide additional networking capabilities or improve compatibility with modern Ethernet adapters or modules.
4. Utilizing Soft PLCs or Emulators:
   • Software-based PLCs or emulators can mimic the functionality of the older hardware PLCs on a modern computer, which can then be connected to the Ethernet network.
   • This approach might require significant changes in system configuration and programming.

Considerations for connecting older DH+ PLC5s SLC-504s latest ethernet products:

1. Compatibility and Configuration:
   • Ensure that the chosen method of integration is compatible with both the legacy PLC system and the modern Ethernet network.
   • Configuration of network settings and addresses must be carefully managed to ensure seamless communication.
2. Data Transfer Rates and Latency:
   • Older PLC systems may not support the data transfer rates that modern Ethernet networks provide. It’s crucial to consider the impact on system performance and response times.
3. Security Concerns:
   • Introducing Ethernet connectivity may expose legacy systems to network security risks. Implement appropriate cybersecurity measures.
4. Legacy Software Support:
   • Ensure that the programming software for the older PLCs can communicate over the new network setup. Software like RSLogix 5 may need specific configurations or updates.
5. Professional Assistance:
   • Due to the complexities involved, it may be beneficial to seek professional assistance, especially from vendors specializing in industrial network integration.

Future-Proofing:

While integrating older systems like PLC-5s and SLC-504s with modern Ethernet products is feasible, it’s also a good opportunity to evaluate the long-term strategy for automation systems. In many cases, it might be more cost-effective and efficient in the long run to consider gradual upgrading to newer PLC systems that natively support modern networking standards.

The ANC-100e DH+ converters provide communications between newer Ethernet Technologies and DH+ legacy PLC-5s and SLC/504s

The ANC-100e is a pocket-sized, high performance, Industrial Rated Ethernet DH+ Converter.  Features include: Ease of Configuration via Web Interface and DH+ Auto Polarity Detection and DH+ Auto Baud Rate Detection.

$1,295 USD List.

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The ANC-120e is a competitive alternative to AB’s 1784-U2DHP PLC Programming Cable

Is an economical and high performance USB-to-Allen-Bradley Data Highway Plus converter interfacing major HMI, SCADA, PLC Programming packages to Devices on DH+. Its features significantly outperform AB’s 1784-U2DHP PLC Programming Cable operating at 12 Mg USB speed with the Controllogix Ethernet/IP Driver.
The ANC-120e works with all SCADA, MMI, PLC programming packages installed on your PC with USB direct access to the DH+ network and stations. These packages include RSLINX/LOGIX Classic & Enterprise with RSLOGIX 5/500, Wonderware DAServer & TCP/IO Server, Citect, and Kepware using Controllogix Ethernet/IP Drivers.
$1,295 USD List. 

USB To Data Highway Plus (DHP, DH+) – Using the ANC-120e, a lower cost alternative to the 1784-U2DHP

In today’s episode of The Automation Podcast I take a look at the ANC-120e USB to Data Highway Plus converter from Automation Networks. Now you may be asking yourself why the folks over at Automation Networks would release a USB to DH+ converter when Rockwell already makes the 1784-U2DHP? Well if you haven’t looked lately, that … Continue readingUSB To Data Highway Plus (DHP, DH+) – Using the ANC-120e, a lower cost alternative to the 1784-U2DHP

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