What control method is used to transfer PLC data to the DCS?
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I would like to ask the teachers: To transfer data from a PLC to a DCS, so that the DCS can control the data from the PLC, what communication method should be used? How do I set it up?
Some DCS systems include PLC-based data acquisition, such as HONEYWELL PKS, or use the OPC method
We usually use Modbus as the slave device to transfer PLC data to the DCS. . .
Guys upstairs, it still needs to be controlled. The data is easy to obtain; as far as I know, control involves a one-to-one output process, with the PLC receiving the data and then transmitting it out – which is quite complicated. Why do this? Just proceed with communication without any control
Check whether the DCS you are using supports third-party communication, as well as what communication protocols it uses. If it supports it and the protocols are the same, direct communication is possible; otherwise, a protocol conversion module can be added. The specific settings vary by brand.
Redundant MODBUS RTU with RS485 interface; the connection details for the specific devices vary slightly and should be determined based on actual conditions. :)