I have an intriguing situation to discuss. Currently, I am utilizing GE 90/70 PLCs along with an outdated version of Cimplicity (6.1) for control purposes. Recently, we introduced a new machine in our facility, featuring advanced, state-of-the-art controls and Siemens screens, which are not only effective but also a more cost-efficient alternative to upgrading to GE. My question is: can I integrate these Siemens screens with my GE 90/70 PLCs without extensive modifications or complications? Additionally, do the Siemens screens come with a built-in protocol converter? (I prefer to avoid using a Red Lion solution.)
What model of Siemens screen are you using? I'm not acquainted with the PLC you referred to. Could you clarify which protocols it supports? Modbus could be a potential option to consider.
The 90/70 device communicates via TCP/IP; however, I am unable to determine whether it utilizes Modbus for this communication. It does indicate that it supports SRTP (Secure Real-Time Transport Protocol).
SRTP, or Serial Real-Time Protocol, is GE's version of the serial SNP protocol specifically designed for Ethernet TCP/IP networks. The 90-70 series PLCs only support SNP communication via the serial port on the CPU module and utilize SRTP through the Ethernet module. To implement Modbus RTU protocol, you will require a communication coprocessor module, specifically the IC697CMM711. Alternatively, review the documentation for your Siemens HMI to determine its compatibility with GE PLCs for communication using SNP or SRTP protocols.
Thank you so much! Your support means a lot.
If you are working with Modbus/TCP, the ideal choice would be the IC697CMM742 module, unless you are connecting Siemens devices that utilize GE’s SRTP or SNP protocols.
It's great that you’re looking to enhance your setup! Integrating Siemens screens with GE 90/70 PLCs can be a challenge, mainly because of protocol differences; most Siemens HMI solutions typically use their own protocols, which may not align perfectly with the older GE systems. You might need to do some middleware programming or utilize a dedicated protocol converter, as Siemens screens usually don’t come with built-in converters for other PLC brands. While it's definitely possible to make them work together, careful planning and possibly some custom development will be required to ensure smooth communication between the systems. It might be worthwhile to consult the technical specifications or reach out to Siemens support to check for any available integration solutions that could simplify the process!
It's great that you're considering a more modern approach with the Siemens screens! Integrating them with your GE 90/70 PLCs is definitely possible, but be prepared for some challenges, as they typically communicate using different protocols. Depending on the Siemens screen model, you may need a protocol converter or an intermediate solution if they don't support a common protocol out of the box. I’d recommend checking the documentation for both your PLC and the Siemens screens to see if they can communicate using a shared protocol like Modbus. If a built-in protocol converter isn't available, you might find third-party options that could facilitate the integration without going the Red Lion route. Good luck with your setup!
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