4/8/2020 5:06 PM | |
Joined: 9/27/2006 Last visit: 9/22/2024 Posts: 12282 Rating: (2684)
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Hello urosuq; You describe your wiring quite well, but you do not mention how your measuring range module is setup, for PT100 connections? You will find the measuring range modules (there are 4 of them, each channel can be set differently) on the exterior of the module, on the side. To gain access to them you must remove the module from the rack, make the channel settings as required on each measuring range module, place back the analog module on the S7-300 rack and connect the wiring arm. The screenshot below is taken from the S7-300 module data manual. https://support.industry.siemens.com/cs/ww/en/view/8859629/99691190667 Take the Note in the screenshot into account, each channel of your analog module can only hold 1 PT100 connection,. Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 04/08/2020 17:08:21 |
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4/8/2020 7:30 PM | |
Joined: 1/30/2017 Last visit: 5/3/2023 Posts: 15 Rating: (0) |
Hello dchartier, That is also written in my post, just a little bit hidden. All 4 channels are already set to A.
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4/9/2020 8:48 AM | |
Joined: 4/24/2006 Last visit: 9/20/2024 Posts: 8742 Rating: (1168) |
Hello, Perhaps this manual might help: SIMATIC S7-300 SM331; AI 8 x 12 Bit Getting Started part 3: Thermocouples Please check the measuring module. (A should be pointing to the frontconnector) Check if hardware configuration is right. Does channel have the right parameters? (Download the hardware configuration) And disable the unused channels. Best regards, Wizard |
Last edited by: Wizard at: 04/09/2020 08:49:12 |
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