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Connecting Pt100 to sm331 7kf2

Created by: Boanda at: 5/31/2013 11:40 AM (5 Replies)

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5/31/2013 11:40 AM	Rate (0)
Boanda Advanced Member Joined: 3/2/2013 Last visit: 7/8/2024 Posts: 20 Rating: (0)	Hello, I have an analog module and I need to connect to it some PT100 sensors. From what I have read I must connect it in a 4 wire connection and the socket on the side to PT100. In Symbols dialog I have 8 adresses. Can I connect 8 sensors to the module or in what adresses do I write and what adresses do I use? Thank you. Attachment HWcnf.gif (224 Downloads)

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5/31/2013 12:15 PM	Rate (0)
Wizard Diamond Expert Joined: 4/24/2006 Last visit: 9/13/2024 Posts: 8736 Rating: (1167)	Hello Boanda, Here is a link to manual: SIMATIC S7-300 Module data See chapter 6.7 for more information about analog card. When you want to connect PT100, see page 373 You can connect 4x PT100 to 1 card. You can read Channel 0, Channel 2, Channel 4 and Channel 6. Best regards, Wizard

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5/31/2013 12:37 PM	Rate (0)
Boanda Advanced Member Joined: 3/2/2013 Last visit: 7/8/2024 Posts: 20 Rating: (0)	Thank you for your response, How about the adressing?? In symbols I have 8 lines for 8 inputs, what do I use, 1,2,4,6? Thank you.

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5/31/2013 2:34 PM	Rate (0)
Wizard Diamond Expert Joined: 4/24/2006 Last visit: 9/13/2024 Posts: 8736 Rating: (1167)	Hello Boanda, When the card starts with address 256. Channel 0 is PIW 256 Channel 2 is PIW 260 Channel 4 is PIW 264 Channel 6 is PIW 268 Best regards, Wizard

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5/31/2013 7:02 PM	Rate (0)
SteveA Posts: 297 Rating: (41)	You can use 2, 3, or 4 wire sensors. You need to connect them as shown in the manual, with jumpers if a 4 wire sensor is not used. HTH, SteveA
SteveA Posts: 297 Rating: (41)
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6/1/2013 1:19 PM	Rate (0)
Boanda Advanced Member Joined: 3/2/2013 Last visit: 7/8/2024 Posts: 20 Rating: (0)	Thank you for your replies, It works. have a great weekend

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