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CPU 1214C ANALOG INPUT

Created by: GaJEnDrA D S at: 2/12/2013 7:27 AM (9 Replies)

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2/12/2013 7:27 AM	Rate (0)
GaJEnDrA D S Bronze Member Joined: 8/9/2011 Last visit: 11/1/2023 Posts: 324 Rating: (19)	Hi all I have a transducer giving output in 4-20mA form but ourCPU 1214C has onboard input dedicated to analog signal of the form 0-10V. So I am looking for a best Solution of this. Please help Thanks
	"Any intelligent fool can make things bigger, more complex. It takes a touch of genius -- and a lot of courage -- to move in the opposite direction.":):)
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2/12/2013 7:50 AM	Rate (1)
Marcjan Platinum Member Joined: 4/22/2010 Last visit: 5/3/2024 Posts: 5697 Rating: (715)	Hello, Cheap solution: 500 ohm resistor in parralel with transducer output. Industrial solution: buy a signal converter. 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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This contribution was helpful to 1 thankful Users Denker

2/12/2013 12:03 PM	Rate (0)
GaJEnDrA D S Bronze Member Joined: 8/9/2011 Last visit: 11/1/2023 Posts: 324 Rating: (19)	After googling i found that If i use shunt resistor i would be able to get o/p in the range 2-10V . does it give precision in measurement? Thanks
	"Any intelligent fool can make things bigger, more complex. It takes a touch of genius -- and a lot of courage -- to move in the opposite direction.":):)
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2/12/2013 10:05 PM	Rate (1)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 9/10/2024 Posts: 10228 Rating: (1181)	No, the best is if you are using 'industrial converter'. The accuracy will be higest in 2-10V range. Serach in google for more details... The analog input card is a voltage input card only? Best regards, Hristo Mihalev

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2/13/2013 8:41 AM	Rate (0)
GaJEnDrA D S Bronze Member Joined: 8/9/2011 Last visit: 11/1/2023 Posts: 324 Rating: (19)	We are not using additional input card . I am talking about Analog input of the CPU1214C which is voltage input..
	Last edited by: GAJENDRADS at: 2/13/2013 8:41 AM "Any intelligent fool can make things bigger, more complex. It takes a touch of genius -- and a lot of courage -- to move in the opposite direction.":):)
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2/13/2013 2:33 PM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 9/10/2024 Posts: 10228 Rating: (1181)	GAJENDRADS We are not using additional input card . I am talking about Analog input of the CPU1214C which is voltage input.. Sorry, It was my fault!

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This contribution was helpful to 1 thankful Users GaJEnDrA D S

2/14/2013 11:49 AM	Rate (0)
GaJEnDrA D S Bronze Member Joined: 8/9/2011 Last visit: 11/1/2023 Posts: 324 Rating: (19)	Hi We have decided to use seperate AI/AQ module SM 1234 which can read current signal. Here in hardware configuration if I give I address as 112 .. it takes 112.....119 & Q address 112....115 In input which part of the address carries our value . I mean which WORD or DWORD. coz so many fluctuatin values appearing in watch table in different WORD or DWORD We are Interfacing vibration transducer of analog output in the form 4-20 mA.. Please suggest me a way . Transducer we are using is FM-LPS-420-20 Forbes Marshall. Thanks
	"Any intelligent fool can make things bigger, more complex. It takes a touch of genius -- and a lot of courage -- to move in the opposite direction.":):)
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2/14/2013 12:31 PM	Rate (1)
Marcjan Platinum Member Joined: 4/22/2010 Last visit: 5/3/2024 Posts: 5697 Rating: (715)	Hello, Your sensor is a 2 wire sensor (datasheet), did you connect it as shown in: How do you connect a sensor to the analog signal modules of SIMATIC S7-1200? The first analog input is IW 112. After that another problem: the sensor is 4-20 mA, the analog input is 0-20 mA. In STEP 7 (TIA Portal) V11, how can you scale integer values in real numbers and real values in integer numbers for analog measurements? Regards, Marcjan
	Last edited by: Marcjan at: 2/14/2013 12:35 PM Problem solved? Please let us know! Please no technical questions by PM, use the forum sections for your questions.
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2/15/2013 7:26 PM	Rate (0)
GaJEnDrA D S Bronze Member Joined: 8/9/2011 Last visit: 11/1/2023 Posts: 324 Rating: (19)	HellowMarcjan Thank you so much. got it done
	"Any intelligent fool can make things bigger, more complex. It takes a touch of genius -- and a lot of courage -- to move in the opposite direction.":):)
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This contribution was helpful to 1 thankful Users Marcjan

3/26/2018 10:15 AM	Rate (0)
Jen_Moderator Diamond Member Joined: 6/19/2017 Last visit: 9/6/2024 Posts: 8175 Rating: (172)	New question published by tvr126 is split to a separate thread with the subject CPU 1214C - Want to connect a loop powered transmitter that outputs 4-20 mA, to the AI channel. Best regards Jen_Moderator

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