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problem in reading analog input 1 via profibus.

Created by: arain at: 5/12/2014 12:17 PM (3 Replies)

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5/12/2014 12:17 PM	Rate (0)
arain Posts: 61 Rating: (0)	hello experts. i am reading analog input1 value on s7-300 plc via profibus. i am using PPO4 and reading analog input value in 3rd word of PZD. issue is that when analog value varies from 0.0 to 2.0V the value in step7 changes from 0 to 32735. and when voltage increase from 2.0 to 10V the value becomes fix 32735 and dose not change. i have observed the parameter r752 in this parameter value is changing from 0 to 10V . but when i read it on plc it becomes fix at 2.0V and does not change weather the voltage changes form 2.0 to 10V. plz help me to solve this issue.
arain Posts: 61 Rating: (0)
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5/12/2014 4:03 PM	Rate (0)
Vithani Platinum Member Joined: 7/8/2009 Last visit: 8/9/2022 Posts: 1974 Rating: (475)	How you are reading this value? I mean which connector using?
	I dont Like people driving Fast, thats the reason I overtake them ;)
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5/13/2014 8:44 PM	Rate (0)
KSN Platinum Member Joined: 8/25/2006 Last visit: 6/1/2023 Posts: 2181 Rating: (273)	Hello. Which drive type you are talking about? Sinamics G/S 110/120?

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5/13/2014 8:51 PM	Rate (0)
Nicky123 Posts: 59 Rating: (2)	You have to use blocks SFC 14 & SFC 15 blocks as DPREAD & DPWRITE.
Nicky123 Posts: 59 Rating: (2)
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