2/7/2020 3:13 PM | |
Joined: 9/27/2006 Last visit: 9/25/2024 Posts: 12283 Rating: (2685)
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Hello gtsolid; Making abstraction of the 840SL (since I am not familiar with CNC machines), we can talk about the S7-300 side of this system. First point, you have to reach the analog input module you are using (which one, by the way?) in your program. Since you are readinga "0" value, you might need to use a peripheral addressing , PEWxx instead of EWxx. What are the input addresses linked to your analog input module by the HWConfig editor? Where and when do you need peripheral addressing? https://support.industry.siemens.com/cs/cy/en/view/18325417 Once you are able to read a numeric value from the RTD sensor, you need to divide it by 10 (or 100 depending on the tyoe of sensor used). Start by transforming the input value to a REAL, then divide by 10.0. Hope this helps, Daniel Chartier |
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