How does the Honeywell S9000 communicate with Siemens PLCs?
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I recently took on a project involving a Siemens PLC with an on-site touchscreen control system, which needs to communicate with a Honeywell S9000 system. It is also necessary to be able to manipulate data in the PLC from within the Honeywell S9000 system. My idea is to use the DP communication protocol for this purpose; I’m not sure which card from Honeywell S9000 can be used for this task How to connect? Please help everyone.
Tianze asked about this, and I found a 76-LC-16U-05-Issue-30 for him; it seems to be a parts list for the S9000. Judging from the list, it seems Profibus DP is not supported; only Modbus is supported.
Many touchscreens also support MODBUS
Can the signals transmitted via Modbus be operated?
Of course it can; it’s just a touch screen, which means short-distance, small-volume data communication. Profibus is essentially Modbus; it is an extension of the Modbus communication protocol. In many installations, PLCs from Siemens’ S7-200 series are used, and Modbus is the communication protocol employed, as the CPUs in this series come equipped with a Modbus communication interface.
The touch screen communication in the S7-300 series generally uses MPI or PROFIBUS, as the 300 CPU has MPI or PROFIBUS interfaces integrated within it.
I asked Tianze about this question, as I didn’t quite understand it, and he told me to ask you. Do you mean that as long as I use a communication card with Modbus protocol in the S9000 system, I can read the data from the touch screen into the DCS and operate on these parameters within the DCS?
In the system of Zhejiang University’s Central Control System, it seems that Modbus only supports monitoring, not control operations
https://wenku.baidu.com/view/778741c2f524ccbff0218406.html Check out this document, page 9. The official Honey model is equipped with an operator panel touchscreen, connected via an RS232 interface. This thing is too old and outdated; there’s very limited information available online. Since you have taken on the project, there should be relatively a lot of on-site materials. For Zhejiang University Zhongkong’s Modbus, it’s not a matter of whether it is supported or not, but rather whether the client approves of this approach. Now, any Modbus communication system supports read and write operations.