7/6/2013 7:39 PM | |
Joined: 5/28/2008 Last visit: 9/21/2024 Posts: 4515 Rating: (839) |
Dear Mohammed, Did you measured the value forced to AI channel when you inject the 20 mA? Please open a VAT and tell us what is the count value @ injecting the 20mA? How do you normalise the AI count value? Do you use FC105 (SCALE)? |
Last edited by: Ayman Elotaify at: 7/6/2013 7:40 PMAyman Elotaify |
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7/6/2013 7:56 PM | |
Joined: 3/15/2011 Last visit: 9/18/2024 Posts: 134 Rating: (9) |
check the count value as per Ayman , the count value must be overflowing above 27468 counts. also check if the channel congiguration is 4-20mA or 0-20 mA regards Ashutosh |
7/6/2013 8:05 PM | |
Posts: 28 Rating: (0) |
DearAyman Elotaify, Thanks for reply, |
7/6/2013 8:26 PM | |
Joined: 5/28/2008 Last visit: 9/21/2024 Posts: 4515 Rating: (839) |
Hello, HEX 6C02 = DEC 27650 20mA should count only 27648 So your count value is overflow because your injected current is 20.0014467. Could you please tell me part number of your module. And also check settings in HW config. if you enable diagnostic interupt for this module. Hope this helps.
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Ayman Elotaify |
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7/6/2013 8:29 PM | |
Posts: 62 Rating: (4) |
Dear Mohamed, Raw Count W#16#6C02 Means The Raw count is 27650 due to this u r getting the Error in the Scada. Could u Please Specify the type no of Modules.(MLFP N o) why Because some Modules Having the Specal Hardware for setting the mode. There are so many factors for Happen this. 1. Earthing Problem 2. Calibrator Current is more than 20 MA. 3. Configuration of the AI module.(2wire or 4 wire) Try to calib from AO Module. Connect AO Module Output to the AI Module Then Force the 27648 to the AO Module. I Hope this will give Proper Reading. Try this & replay to us. Regards, Avinashkrishna Bhimavarapu |
7/6/2013 8:33 PM | |
Posts: 28 Rating: (0) |
DearAyman Elotaify, |
Last edited by: Mohamed Uvais at: 7/6/2013 8:43 PM |
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7/6/2013 8:45 PM | |
Joined: 5/28/2008 Last visit: 9/21/2024 Posts: 4515 Rating: (839) |
Hello, Please have a look on attached pic. Increase the upper limit as per the picture. By the way, Do you have OB40 within your SW? |
Ayman Elotaify |
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7/6/2013 8:48 PM | |
Joined: 5/28/2008 Last visit: 9/21/2024 Posts: 4515 Rating: (839) |
There's a diiference between mA reading of your Fluke clamp meter (19.93mA) & what your AI sense (20.001) which is equivalent to 27650 counts. In any case, If value of AI exceeded 27648, then it's exceeded 20mA, So it's Overflow. |
Ayman Elotaify |
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7/6/2013 8:58 PM | |
Posts: 28 Rating: (0) |
DearAyman Elotaify, I dont have OB40 and jus now i came out of site i'll try that idea 2moro and i'll let u know bcoz this issue make me crazy. Thanks a lot all of u guys for a grt support
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7/6/2013 9:13 PM | |
Joined: 8/27/2006 Last visit: 9/2/2024 Posts: 719 Rating: (88) |
On the module itself, do you see the red LED lighted?? if yes then it's an overrange, but I didn't think that injecting more than 20mA will give a result of zero. Did you check the jumper position on D (on the side of the module?
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7/6/2013 9:25 PM | |
Joined: 5/28/2008 Last visit: 9/21/2024 Posts: 4515 Rating: (839) |
Result 0 is only on the HMI or SCADA But actually it gives him 27650 Counts So, it seems that he will check his SW. First he will check to increase high limit. |
Ayman Elotaify |
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7/6/2013 9:31 PM | |
Joined: 8/27/2006 Last visit: 9/2/2024 Posts: 719 Rating: (88) |
If it is zero on HMI then its must have been zero on the output from FC105 also, so he should check that also. Again, I'm not totally sure if overrage causes FC105 to output zero
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7/6/2013 9:42 PM | |
Joined: 5/28/2008 Last visit: 9/21/2024 Posts: 4515 Rating: (839) |
No it shouldn't Because here is the equation of FC105
I can not judge why zero is appear on HMI coz I do not have the SW. May be that output (FC 105 Out) is repeated in software and another network write zero in it. I think that Mohammed should monitor it and also use cross reference to search the OUT of FC105. But first we would like the SF led of AI to be off. Hope this helps.
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Last edited by: Ayman Elotaify at: 7/6/2013 10:10 PMLast edited by: Ayman Elotaify at: 7/6/2013 9:43 PMAyman Elotaify |
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7/7/2013 9:53 AM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272) |
I can not judge why zero is appear on HMI coz I do not have the SW. May be that output (FC 105 Out) is repeated in software and another network write zero in it. I think that Mohammed should monitor it and also use cross reference to search the OUT of FC105. But first we would like the SF led of AI to be off. Hope this helps. Hello, I guess during overflow he has moved zero value in logic separately hence the value on hmi is showing zero. But i dont think there is any problem with module or channels. |
VANDE MATARAM..... |
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7/7/2013 10:07 AM | |
Joined: 8/27/2006 Last visit: 9/2/2024 Posts: 719 Rating: (88) |
But we cannot guess, we have to make sure. He should post his program here for analysis. |
The more you know, The more you know that you don't know |
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7/7/2013 2:18 PM | |
Posts: 28 Rating: (0) |
DearAyman Elotaify, I tried ur advise but unfortunately it doesn't work . let me tel u wat i did today... Checked complete attached card . CH1 27696 Unhealthy CH2 27608 Healthy CH3 27770 Unhealthy (Spare) I donno wat i need to do...it has OB40
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7/7/2013 2:33 PM | |
Joined: 1/28/2012 Last visit: 7/23/2024 Posts: 519 Rating: (83) |
Check your AI card with AO. . Connect your AO (4-20 ma) card pins to AI pins. . Force AO with specific count (Must try Max. Count 27648) and check your AI. . If count matches, then your AI card is ok. . |
Regards, |
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7/7/2013 2:39 PM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272) |
yes, you are right. We cann't guess.
Hello, Please attach your program here as said by our friend Amazing Ahmed. |
Last edited by: Amit_86 at: 7/7/2013 2:39 PMVANDE MATARAM..... |
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7/7/2013 4:38 PM | |
Joined: 5/28/2008 Last visit: 9/21/2024 Posts: 4515 Rating: (839) |
Dear Mohammed,
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Ayman Elotaify |
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7/7/2013 7:11 PM | |
Posts: 28 Rating: (0) |
Dear Ayman Elotaify, No, All these are normal 2 wire transmitter signals and yes CH3 not used (Deleted in as built). All are in "D"
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7/7/2013 7:28 PM | |
Joined: 3/15/2011 Last visit: 9/18/2024 Posts: 134 Rating: (9) |
can you attach a snapshot of hardware configuraion of AI module. it will be more help full.also as said in one of the posts you can test if via forcing through VAT table regards Ashutosh |
7/7/2013 7:29 PM | |
Posts: 28 Rating: (0) |
HW setting... |
7/7/2013 7:32 PM | |
Joined: 8/27/2006 Last visit: 9/2/2024 Posts: 719 Rating: (88) |
Is that a redundant configuration I see in the backgroud?? did you set the action for the discrepancy between the redundant analog inputs in the configuration of the module? (if redundant AI is found)
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The more you know, The more you know that you don't know |
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7/7/2013 7:39 PM | |
Posts: 28 Rating: (0) |
no its not redundant configuration |
7/7/2013 7:44 PM | |
Joined: 8/27/2006 Last visit: 9/2/2024 Posts: 719 Rating: (88) |
Just to be sure it's not a programming error, did you simulate your AI module using PLCSIM?? give it a try and test all the ranges. If you see zero when you simulate 20mA (27648) input, then re-check your program.
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The more you know, The more you know that you don't know |
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7/7/2013 7:51 PM | |
Posts: 28 Rating: (0) |
simulation is 27648 its ok but reading from module its more than 27648 |
7/7/2013 7:56 PM | |
Joined: 8/27/2006 Last visit: 9/2/2024 Posts: 719 Rating: (88) |
And what about simulation for more that 27648????What's the result?
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The more you know, The more you know that you don't know |
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7/7/2013 8:24 PM | |
Posts: 28 Rating: (0) |
same 0 bar and fault... |
Last edited by: Mohamed Uvais at: 7/7/2013 8:25 PM |
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7/7/2013 8:28 PM | |
Posts: 28 Rating: (0) |
There is any possiblity to control count limit... |
7/7/2013 8:36 PM | |
Posts: 8946 Rating: (999) |
Try a parallel resistor. |
7/7/2013 8:39 PM | |
Joined: 5/28/2008 Last visit: 9/21/2024 Posts: 4515 Rating: (839) |
Hello Mohammed, Uncheck Diagnostic Interrupt and Hardware InterruptWhen Limit Exceeded.
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Ayman Elotaify |
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7/7/2013 8:39 PM | |
Posts: 28 Rating: (0) |
@IBN-ServiceOMG! for all Channels impossible...Client will kick me out... by software... @Ayman ElotaifyOkay then it will work...coz b4 it was like that...after ur advise i checked all this...
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Last edited by: Mohamed Uvais at: 7/7/2013 8:43 PM |
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7/7/2013 8:42 PM | |
Joined: 5/28/2008 Last visit: 9/21/2024 Posts: 4515 Rating: (839) |
Just try. I would like to know where is the problem. I have doubts about your code. Please attach SW here.
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Ayman Elotaify |
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7/7/2013 9:08 PM | |
Joined: 8/27/2006 Last visit: 9/2/2024 Posts: 719 Rating: (88) |
Then please upload your software here for us to analyse. It looks like a software problem
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The more you know, The more you know that you don't know |
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7/8/2013 2:35 PM |
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Joined: 11/8/2011 Last visit: 8/21/2024 Posts: 387 Rating: (43) |
please upload you software backup |
7/8/2013 4:12 PM | |
Posts: 28 Rating: (0) |
Program...Plz help me... |
Last edited by: Mohamed Uvais at: 7/10/2013 9:12 PM |
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7/8/2013 4:39 PM | |
Joined: 8/27/2006 Last visit: 9/2/2024 Posts: 719 Rating: (88) |
I did not find the FC105 where you scale the analog input. It's address is PIW546??? RIght???
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The more you know, The more you know that you don't know |
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7/8/2013 5:12 PM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272) |
Hello, Thanks god you uploaded the program finally. I am pleased to see the codes because it is Water Treatment Project (DM Project) which i recently commissioned. I have gone through the FB106 user-defined Scaling Library Block. You have called this block in FC307 for multiple times. Now , Since the block is defined for two redundant Analog channels , you should configure both the channels. But i found that you have only connected one channel whereas in other channel you have moved some fix count W#16#DB6D. What is the purpose of moving this count W#16#DB6D? Since the maximum count supported by analog channel is W#16#6C00(27648). I suggest you to use both channel address same in Process Value 1 & Process Value 2 since the Scaled value is the average value. i.e PIW338 in Process Value 1 & Process Value 2. Hope this helps. |
Last edited by: Amit_86 at: 7/8/2013 5:13 PMVANDE MATARAM..... |
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7/8/2013 5:40 PM | |
Joined: 5/28/2008 Last visit: 9/21/2024 Posts: 4515 Rating: (839)
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Hello, FC105 is inserted in the blocks but it is not called. You have to call it once for each AI channel for scaling.
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Ayman Elotaify |
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7/8/2013 7:28 PM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272) |
Hello, i refered his program & in that FC105 is called in FB106 Library Block which is used in multiple FC's. |
VANDE MATARAM..... |
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7/8/2013 7:34 PM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272) |
Hello Mohamed, One more thing i noticed in your FB106. L #Process_Value_1 T #Temp_PV FC105 L #Process_Value_2 T #Temp_PV FC105 Here you are moving both Process Value in Same TEMP_PV , instead of that move it in different varible like this. L #Process_Value_1 T #Temp_PV1 FC105 L #Process_Value_2 T #Temp_PV2 FC105 Hope this helps. |
VANDE MATARAM..... |
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7/9/2013 4:47 AM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272) |
Hello Ahmed, I think there is some confusion...... Yesterday Ayman also told same thing but i didnot noticed your reply. Today i have gone through this post again i saw your reply same as him. i checked his cides again. have you seen FB106? i found FC105 used twice in this user defined library block which has been called from many FC'S. |
VANDE MATARAM..... |
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7/9/2013 4:59 AM | |
Joined: 5/28/2008 Last visit: 9/21/2024 Posts: 4515 Rating: (839)
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Hello, Now we have to identify if the problem is comming from the module (Hardware) or it is a softwrae problem. Actually the program is complicated and a lot of calls for FCs from lot of other FCs/FBs... In any case, If possible to Mohammed, please try to download a simple program with only OB1 and FC105. Call FC 105 with scaling 0.0 to 100.0 and change the AI channel and tell us what will happen. If it worked fine even with 20mA, then you have to spend some time with cross reference and with forcing the AI @ 20mA to see what is happening with software in this condition. Hope this helps.
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Ayman Elotaify |
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7/9/2013 5:47 AM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272) |
Hello, After going throgh codes i am sure that there is no problem with hardware or module. it is a software problem please refer my earlier post and revert back. |
Last edited by: Amit_86 at: 7/9/2013 5:51 AMLast edited by: Amit_86 at: 7/9/2013 5:50 AMVANDE MATARAM..... |
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7/11/2013 11:09 AM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating: (272) |
Hello Mohamed, One more thing i noticed in your FB106. L #Process_Value_1 T #Temp_PV FC105 L #Process_Value_2 T #Temp_PV FC105 Here you are moving both Process Value in Same TEMP_PV , instead of that move it in different varible like this. L #Process_Value_1 T #Temp_PV1 FC105 L #Process_Value_2 T #Temp_PV2 FC105 Hope this helps. Hello, Any Update on this issue? |
VANDE MATARAM..... |
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7/17/2013 3:37 PM | |
Posts: 28 Rating: (0) |
Hello, Now i found new issue... I have in my panel SITOP Modular 24VDC Power Supply. Here when i checked output of power supply +ve with ground got 50VAC then i make power down and checked voltage disappears (0VAC). only i'm getting when -ve grounded through IM module. if i remove -ve from ground its ok. help me...
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