DataSurfer

MrPLC Member
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About DataSurfer

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  • Country United States
  1. Siemens Mobile HMI program signature

    Thank you, HMI_William!  I really appreciate those ideas!
  2. Controls Engineer is the title we use in the American manufacturing industry most often.
  3. Keep it up.  Screw the haters.  I like the website.  Bookmarked.
  4. PLC siemens

    Unless you are in India or China, no.   Siemens will not release the software that works with these PLC unless you are located in the correct area of the world. "S7200 SMART PLC is released only for INDIA and CHINA. You can not find any manual , application ,FAQ on our support site. SIMATIC S7-200 SMART PLC is designed to suit the needs of developing markets that have higher pressures of price and demands on performance.  Providing an excellent performance-to-price ratio, SIMATIC S7-200 SMART PLC when combined with other SMART drive products from Siemens helps in building extremely cost effective efficient automation solutions." https://support.industry.siemens.com/tf/WW/en/posts/s7-200-smart-plc/155512?page=0&pageSize=10  
  5. Siemens Step 7 micro win smart

    We are in the middle of the same issue here in the USA.  An automotive parts manufacturer decided to purchase Chinese made machines instead of American made machine because they got a 30% lower price. Well, now they are screwed.  My company was called in to help when the machine shut down and the local maintenance personnel were over their head.  Siemens will not release the software to us because this line of PLCs/HMIs (SMART series) was only supposed to be released to the Indian and Chinese market. Technically this is a gray market PLC.  Selling it outside of China or India violates Siemens's terms.  Which means that Siemens refuses to supply us with software (which is weird because my company is a Siemens Partner). We ended up ripping out the PLC and the HMI and replacing them with the S7-1200 series.    
  6. Faults and Safety Routines

    Man, that is some good advice.  And very thorough. If you are stuck for generating a fault in a hurry, the most common practice is to use an overcycle timer. Just run a dedicated fault timer with the timer enable based on monitoring your output (raise cylinder solenoid) and it's verifying input (cylinder raised prox switch).  Set your TON timer running when you set your output (raise cylinder solenoid) and cut the timer enable off when you get the input verifying the state change (cylinder raised prox switch). Not just set an appropriate preset for the timer.  Should it take 2 seconds for your input prox to see the motion when you turn on your motion output?  Set your preset to 5 seconds. Did your TON get a DN bit?  Latch on a fault bit.  Use the fault bit to halt your process as appropriate.
  7. PID LOOP DIFFERENT UNITS OF MEASURE

    I found this helpful.  Its got a lot of information, but it is written with the Allen Bradley PLC in mind: http://www.eng.utoledo.edu/~wevans/chap19_S.pdf
  8. I am using TIA Portal V14 to program a Siemens Mobile HMI (KTP900 Mobile).I would like to pull up a program 'signature' from the HMI that would allow me to verify that the code in the HMI is the correct version.  This would help prevent an accidental overwrite of old code, resulting in a single Mobile HMI that has differing code from several others that are also in use.The closest comparison would be a Safety Signature from a Safety PLC.  However, I just want to use a file checksum or similar variable that I can put on my screen.Any ideas?  I appreciate it.
  9. I am using TIA Portal V14 to program a Siemens Mobile HMI (KTP900 Mobile). I would like to pull up a program 'signature' from the HMI that would allow me to verify that the code in the HMI is the correct version.  This would help prevent an accidental overwrite of old code, resulting in a single Mobile HMI that has differing code from several others that are also in use. The closest comparison would be a Safety Signature from a Safety PLC.  However, I just want to use a file checksum or similar variable that I can put on my screen. Any ideas?  I appreciate it.