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simatic manager temp reading

Created by: AliHariri at: 2/14/2014 6:05 AM (3 Replies)

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2/14/2014 6:05 AM	Rate (0)
AliHariri Posts: 5 Rating: (0)	Dear all, I am new in the forum i hope that I post my question in correct place I want to learn how can I read analouge value from Pt100 connected to S7 300 what does it meas normlizing then I need stepsto know how can I get the value and send it through profibus to another device MP337 thanks
AliHariri Posts: 5 Rating: (0)
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2/14/2014 8:39 AM	Rate (0)
Marcjan Platinum Member Joined: 4/22/2010 Last visit: 12/15/2022 Posts: 5697 Rating: (702)	Hello, If you use a pt100 on a card that can read it directly, you get a value in 1/10 degrees, 20 degrees will be read as 200. So al you have to do then is convert the PIW to Real datatype and devide by 10.0 If you use a PT100 converter with mA or vlotage output you must use the scaling block for 300 system that is FC 105. If you need more information, please let us know what equipment you have there . Regards, Marcjan
	Last edited by: Marcjan at: 2/14/2014 8:40 AM Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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2/14/2014 2:37 PM	Rate (0)
AliHariri Posts: 5 Rating: (0)	thank you for your replay I need to ask if you have link to read it deeply about how to use analoge value of pt100 and how can I send this value through profibus in S7 300 thanks
AliHariri Posts: 5 Rating: (0)
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2/14/2014 3:38 PM	Rate (0)
Marcjan Platinum Member Joined: 4/22/2010 Last visit: 12/15/2022 Posts: 5697 Rating: (702)	Hello, You can read some about analog values in: SIMATIC S7-300 S7-300 Module data Chapter 4,5,6. You don't have to send values to your HMI, the HMI reads the values from PLC if connection is o.k.. To connect your panel andget some examples have a look at; Download Training Curriculums, Classic Modules Hope this helps, Regards, Marcjan
	Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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