8/12/2014 8:50 PM | |
Posts: 45 Rating: (0) |
dear sir,
it was a working system , but suddenly the analog input showing high value i.e 32767. i go to the following link but i am not getting any proper guidance. /tf/WW/en/Posts/105049 my harware configuration is cpu 1212c ac/dc/rly (214-1ag31-0xb0) and an analog input module(231-4hd30-0xbo). i donwloaded a new sample program to plc and checked the analog input stil am getting 32767. what will be the problem for this,, i changed the analog input module with a new one but still it showing 32767. i had not connected any inputs. i had give only 24 v supply to the moduless.i had unchecked all the overflow and underflow diagnostics too. and when i tried to inject 4-20mA using fluke volt/ma caliberator plc not accepting any values it shows fully 32767. new module also showing the same 32767 ( new one just opened the packet) . what will be the problem for that.. pls i need an urgent help from some one, thanks and regards antony |
Last edited by: O_Moderator at: 8/13/2014 7:50 AMnew subject after splitting from /tf/WW/en/Posts/104472#top |
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8/12/2014 9:40 PM | |
Joined: 7/7/2010 Last visit: 10/16/2024 Posts: 15319 Rating: (2432)
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If you jumper your analog input to M (DC common), does it read 0? If you switch it to +/-10VDC and inject say 0 or 1.5V (AA battery), does it work properly? What voltage is measured on your DC common (M) relative to PE or machine ground? It might be your machine ground has a bad connection, though less likely to problem. |
science guy |
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8/13/2014 7:51 AM | |
Joined: 4/24/2009 Last visit: 8/20/2024 Posts: 2682 Rating: (135) |
Thread closed, because question is already published in the following thread analog input showing high value. Best regards O_Moderator |
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