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About jrw

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  1. Encountering my first Siemens PLC

    Bob As you can see, there’s no shortage of opinions on this site.  I think it’s human nature to dislike what they don’t know or are not familiar with.  Or inherited from an Europe OEM. :) While I do agree that S7400 is getting long in the tooth. An upgrade from AB to Siemens today would be to an S71500, not the S7400.    also find your original Step7 program and don’t go with Lite version  
  2. Encountering my first Siemens PLC

    Bob heres a link too https://cache.industry.siemens.com/dl/files/825/109751825/att_933142/v1/STEP_7_-_Programming_with_STEP_7.pdf?download=true  
  3. Have you read this? https://support.industry.siemens.com/cs/document/109771853/how-do-you-operate-dp-slaves-on-a-redundant-s7-1500r-h-controller-?dti=0&lc=en-US
  4. Simatic TP 1200 Comfort

    Moggie what version of portal and firmware are you using ? If you can see a MAC address then it’s not a brick   
  5. Is it possible to read data from NI cDAQ 9185 via ProfiNet?

    I was looking at the NI site and they have a profinet interface.  To pass data to and from S7 I’m sure some programming has to be done 
  6. You should be able to find something close here   you just need the starter set up section   https://www.automation.siemens.com/mc-app/sinamics-application-examples/Home/Index?language=en
  7. Siemens PLC get data from OPCUA server.

    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?
  8. Siemens PLC get data from OPCUA server.

    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
  9. PN PLC 2 PLC multiple DB's

  10. Siemens Simatic S7-1200 component selection

    Pressure, humidity... these are typically “analog” inputs to a plc. The analog value from the sensor is typically 0-10 vdc , 4-20 milliamp. Others exist, these are the common outputs from these sensors  your plc system will need an “analog input” for each sensor  and yes, 24vdc is needed to power the plc and these sensors    
  11. Siemens S7-1200

    It doesn’t need it on the motor.  Setup the mechanics appropriately. The plc closes the position loop.  But the motor must drive the material and the encoder must be driven from the material. They have to be connected in some fashion.  Do some reading. It will work.  Or hire a system integrator. 
  12. Siemens S7-1200

    So analog to your drive and high speed counter from an encoder back to the 1200 hsc input Easy This is done with a TO A third party drive will work just fine Enable from plc - a Qx,x output Analog reference from plc  for position/speed control  
  13. Siemens S7-1200

    Yes. You can do point to point moves with a TO in the 1200. That’s the way I would control it.  I can’t say I understand your ramping scheme but a 1200 can be a position controller 
  14. Siemens S7-1200

    The S71200 has technology objects for position control. Have you looked in to that ?

     Contact your Siemens distributor  you have to buy it