Posted 26 Aug 2020 Good day all, I'm going to get a new Siemens PLC (model haven't decide) for a project using OPCUA server. I'm curious to know whether I made the right choice or not? Cause I planning to use that PLC to process some data that it got from OPCUA server. Can I know whether I can directly use Ethernet connection to take the data from server directly and fed it into my Siemens PLC? (I probably won't use the DI of the PLC for input data) Share this post Link to post Share on other sites
Posted 26 Aug 2020 (edited) You made the right decision S71500 can be a client or server. typically your plc is a sever (Serves data) and the pc is the client S71200 can be a server. Both are easy to set up Edited 26 Aug 2020 by jrw Share this post Link to post Share on other sites
Posted 27 Aug 2020 (edited) Quote You made the right decision S71500 can be a client or server. typically your plc is a sever (Serves data) and the pc is the client S71200 can be a server. Both are easy to set up But what I saw is that S71500 can only be server. It can be client too? I want the PLC to take data from the server and process it to control some output. Also if I'm using OPCUA with siemens, I need to purchase the license right? Edited 27 Aug 2020 by SoraJayson Share this post Link to post Share on other sites
Posted 27 Aug 2020 (edited) Yes and yes https://support.industry.siemens.com/cs/search?search=1500%20opc&type=ProductSupport%2CExampleOfUse%2CCatalog%2CCertificate%2CCharacteristic%2CDownload%2CFaq%2CManual%2CProductNote%2CDownloadSoftwareArchive%2CSlk%2CForum&lc=en-GB please describe in detail what you are doing? Edited 27 Aug 2020 by jrw Share this post Link to post Share on other sites
Posted 28 Aug 2020 So right now, there is an existing Omron PLC in the machine which I can't touch or modify anything from it and I had to add a new feature for the machine itself. I learn that the PLC is in an isolated network connected to a router together with 2 more PLCs. There is one PLC (CJ2M-CPU34) connected to the network expansion card and it send the data to the SCADA pc and the data will go into the OPCUA server. So I was wondering, can I just obtain the data from the server directly and fed it into my new PLC? My plan here is to assign my new Siemens PLC as client to get the data and process it at my PLC to produce output values. The Siemens PLC is totally isolated from the machine, it will be a standalone PLC that obtain the data from the server. Is it possible? Is this detail? or am I missing something? Share this post Link to post Share on other sites