5/20/2019 12:38 PM | |
Posts: 3093 Rating: (323)
|
Hello, Regards, |
5/21/2019 2:40 AM | |
Joined: 9/9/2015 Last visit: 9/25/2024 Posts: 727 Rating: (278) |
Hello saba_149, My way of doing it is, I have two CPU 410-5H. one is SIS and one is Standard process CPU. I connect both of them using Simatic S7 Connection (Siemens way of connection) via ethernet. Then I can transfer data via siemens PLC to PLC communication. Sample Catalog For Modbus, you can use modscan to check on the slave. I think the response time was too slow. Maybe the coding in the DCS having some problems or the way they poll the data need to be improved? OPC is not suitable for PLC. Normally we use it for Station to Station communication. The latest tech is OPC UA. The classic way is OPC DA. All kinds of communication are okay, as long as the sender sends the data to a receiver within an acceptable time range. You should define this. And this will become your standard. (this is according to IEC61508). IEC will not ask you to have SIL in the cable / the medium but only the components in between. The way of communication is not really significant but it should meet the "time". (Important Guidelines: S.L.A.T.S - Sense, Logic, Actuate, Time, Safety Integrity) Hope it is helpful for you. AttachmentSimpleIntergrationIntoControlSystem.pdf (224 Downloads) |
Please give me 5 stars Rating if my post is helpful for you. :) |
|