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system fault

Created by: Dongerpure at: 4/18/2011 3:24 PM (4 Replies)

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4/18/2011 3:24 PM	Rate (0)
Dongerpure Bronze Member Joined: 3/8/2011 Last visit: 5/17/2023 Posts: 262 Rating: (21)	dear my cpu is showing system fault but still i am able to access the field values. how to set the range of rtd as its showing 11c in field display and in my screen its showing14 so how to calibrate it and ranges
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4/18/2011 3:48 PM	Rate (0)
dchartier Grandmaster-Expert Joined: 9/27/2006 Last visit: 9/15/2024 Posts: 12282 Rating: (2683)	Hello sandy; If your CPu is showing SF, your first order of priority should be to open the CPU's diagnostic buffer to find out what the PLC is complaining about, and set it right. To help us helpyou further, you should tell us what analog input module you are using to read the RTD (the part number would be useful),how the RTD is connected to the input module (3-wire, 4-wire... and on what pins)and how you scale the value in the program. Hope this helps, Daniel Chartier

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4/23/2011 3:02 PM	Rate (0)
Dongerpure Bronze Member Joined: 3/8/2011 Last visit: 5/17/2023 Posts: 262 Rating: (21)	thanks for your reply sir, i am new to rtd's the rtd used in the field are 3-wire and in my plc its 4 wire connection what exactly i have to do and would u pls suggest me do i have to set an scaling limits or it automatically takes
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4/23/2011 4:27 PM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 9/10/2024 Posts: 10228 Rating: (1181)	Hello, As Daniel already asked, in order to answer you there is need it more info about used hardware. Do you use RTD modules or AI plus transducer? Best regards, Hristo Mihalev

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7/21/2014 8:39 PM	Rate (0)
Narrator1 Bronze Member Joined: 3/25/2013 Last visit: 3/21/2019 Posts: 176 Rating: (1)	New question split intocpu shows sf (system fault occur) and the overload led of the profibus module eluminated. With best regards, Narrator1

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