Here's some details:
1.) Client has a existing SCADA - spectrum power cc integrated by a huge foreign technical team. They requested for some additional control on selected equipment - like scheduling of ON/OFF operation. However, the huge foreign technical team takes too long to respond. Usually takes 6 or more months before the project is finished.
2.) Hence, they contacted a local technical team to give them what they need - the equipment scheduling.
3.) We inspected and found out that the selected equipment were linked to the existing SCADA system - siemens through Modbus protocol. I don't do siemens, so I propose to:
a. Disconnect the selected equipment to the existing SCADA.
b. Use a PLC-HMI to control the scheduling.
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4.) It end up, client wanted two options:
a. Use Mitsubishi PLC-HMI and isolate the scheduling of the selected equipment.
b. Use Mitsubishi PLC for control but HMI will be on the existing SCADA.
5.) Of course, my life would be easier if I propose a, however, I wanted to provide them both options. So, I contacted someone who does siemens. The siemens guy said he can do it. But, I cannot find any reference on google how it can be done. I am quiet skeptical about this siemes guy because it is the first time that I will be working with him. I am not quiet confident on his commitmment, and I might end up jeopardizing this whole deal.
Again, can I connect Mitsubishi PLC to siemens spectrum power cc system? Please help. Thanks a lot.