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SIWAREX MS callibration

Created by: Jamil_pk at: 12/15/2008 10:11 AM (12 Replies)

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12/15/2008 10:11 AM	Rate (0)
Jamil_pk Posts: 21 Rating: (0)	I have just got myself the SIWAREX MS modules with Siemens loadcells (SIWAREX R). I've read the manual, the getting started example, and some testings, but things are not very clear. 1) Once connected and I run the SIWATOOL MS, I see the data read is already showing '1KG' (all settings are as per default), even if threre is no load on it!! now to bring this empty reading to zero, should I change the Adjustment parameter, AD3, "Adj. wt. 0' (which is currently showing 5461) to a lower number, if so, how much? does it depend on my weighing range (limit)? {I;m using a single 500Kgs loadcell} 2) also the "ADJ. WT. 2" shows '60074' do I need to do anything with this? 3) IS there anyplace I can get help on the MICROWIN LIBRARY, coz I want to understand all its parameters and thier settings, I'm confused as to what values are constants, and what reflect what? 4) apart from this testing environment, when it is installed, the platform weight has to be adjusted, instead of adjusting with this "adj. wt. 1" value, I intend to do this by "TARE" it with S7-22x, so that if in future my clients do some changes in the platform (weight), they done have to worry about the taring or adjustments, comments? This is the first time I\m using the SIWAREX MS module and would appreciate all help I can get.
Jamil_pk Posts: 21 Rating: (0)
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12/15/2008 1:31 PM	Rate (0)
Arunakat1 Posts: 217 Rating: (52)	Dear Jamil, 1) Yes it can happen please go to process value DR30 and check the ADC before filtering and after filtering. The value of ADC is the current value of process. To adjust zero use the process value with out load to “Adj. Digit 0” in calibration screen. 2) No actually an Adj weight 2 is for calibrating for a second calibration. 3,4) See the attachments. I think this will help you. Thanks Attachment Doc1.pdf (555 Downloads)
Arunakat1 Posts: 217 Rating: (52)
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12/16/2008 1:42 PM	Rate (0)
Siwarexi Gold Expert Joined: 1/4/2007 Last visit: 12/17/2024 Posts: 1166 Rating: (175)	Hello, To your questions: 1) + 2) At first, you need to calibrate your scale, because each scale has different load cells, dead load, and so on. Into the internet, you can see the procedure, how to do a calibration with the Siwarex MS module, with the following link: http://support.automation.siemens.com/WW/view/de/26624348 3) +4) Into the manual of the Siwarex MS module, you can see into the chapter 8 the programming into Step7. Especially the chapter: - 8.9.1 shows you how to tare the scale via Step7 - 8.9.2 shows you how to read and write data from/to the Siwarex MS module via Step7. You can find the manual into the internet with the following link: http://support.automation.siemens.com/WW/view/en/22600601 Best regards
	Last edited by: Siwarexi at: 12/16/2008 1:47 PM
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1/3/2009 11:31 AM	Rate (0)
Jamil_pk Posts: 21 Rating: (0)	Thanks for the replies, I had an earlier version of Siwarex Manual, which did not have the pages you mentioned, thanks now I have a few more pages to go thru. Once I install the loadcell in its place, and place a platform of say 20Kgs. I’m confused as to how I should handle this extra ‘20kgs’? I think I should ‘tare’ this value, and program the “HMI” to accept TARE in future, so that if any change is made to the platform physically, customer doesn’t need to worry about it, just a simple click to accommodate the change. Will this tare remain after power-off? Or I have to make it a part of RETENTIVE MEMORY? There’s another confusion, the SIWATOOL I received a couple of months ago, has only one library, the “Microscale V1.0” library, its missing the “Microscale additional” library – can I get an update on this? where? (I found this after reading the latest Manual) Will I be needing it? If this package was delivered just a recently Siemens should have given me a recent version, I see the CD cover has been dated 04/2006, I doubt there was no development since then? Can anyone help on this?
Jamil_pk Posts: 21 Rating: (0)
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1/3/2009 11:57 AM	Rate (0)
Jamil_pk Posts: 21 Rating: (0)	One quick question! the value of ADC 'before' and 'after' filtering ranges between 5448 to 5446. to get a perfect ZERO, should I put this value in the "Adj. digits 0" ? (which was originally 5461) If so, this means after fitting the Loadcell in its place, after accomodating the extra weight of platform, value for instance is 6000, I put this to the ADJ DIGITS 0,
Jamil_pk Posts: 21 Rating: (0)
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1/5/2009 6:44 AM	Rate (0)
Arunakat1 Posts: 217 Rating: (52)	Hi, I think you should calibrate the siwarx module. To my knowledge the tare weight is retentive it’s a module’s feature. For basic load cell application the additional library is not needed. Actually it is a subroutine as if you see the sample project. If you need you can use it as a library or as it is. If you are using HMI additinal block will help you a lot.(juest to modify the sample projct as for you requirement See this two links also from that you can down load a sample program. There you can find additional subroutine. https://support.automation.siemens.com/WW/skm/frameset.asp? url=%2FWW%2Fllisapi%2Edll%2F22605342%3Ffunc%3Dll%26objId% 3D22605342%26objaction%3Dcsopen%26skm%3D1%26lang%3Den&Query= siwaerx+ms&SearchArea=downl&id=22605342&F11Marker=true&siteid=cseus &query2=&modelled=&lang=en https://support.automation.siemens.com/ WW/skm/frameset.asp?url=%2FWW%2Fllisapi%2Edll %2F28309818%3Ffunc%3Dll%26objId%3D28309818%26objaction %3Dcsopen%26skm%3D1%26lang%3Den&Query=siwaerx+ms&SearchArea= downl&id=28309818&F11Marker=true&siteid=cseus&query2=&modelled=&lang=en For the quick question, yes you can get zero that way. Also you can do that form siwa tool’s service adjustment tab, click adjustment zero valid. See the attachment. I hope this will help you. Attachment siwa.JPG (502 Downloads)
Arunakat1 Posts: 217 Rating: (52)
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1/6/2009 1:00 PM	Rate (0)
Jamil_pk Posts: 21 Rating: (0)	Thanks A.K. I'm actually confused as to the calibration process. the conventional Weight controllers I've calibrated we quite simple, you install the loadcell, wire them, ZERO them without load (or with platform) load some weight, say 200kgs, type the same as calibration weight in the controller press enter, and after a few minutes its calibrated. so far from what I've understood, I'll try to explain, can you please clarify where I get off track? 1) I install the Loadcell and place the platform on it, tighten it, once its stabilized, I press "ADJUSTMENT ZERO VALID 3" 2) Now I place some test weight say 200Kgs on this platform, now with my above previous experience, I think I should enter this in the "ADJ. WEIGHT 1" (not in KGS I assume, or do I need to scale it with the maximum value of 60074, where my loadcell and max. weight is 500kgs, so 200kgs should represented by 24030). after typing in the values, I should click "ADJ. WEIGHT 1 VALID 4" (same can b repeated with weight 2, if required, after increasing the test weights further.) 3) I've copy the library from the sample example to my logic along with the microscale additional, regarding reading the current reading data, where should I pickup the value from "AI0" or are there any later words I should be reading? (mind you mine is a pretty simple logic, no taring, not standstill, etc) would highly apprecaite your feedback
Jamil_pk Posts: 21 Rating: (0)	Last edited by: Jamil_pk at: 1/6/2009 1:18 PM
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1/7/2009 12:27 PM	Rate (0)
Arunakat1 Posts: 217 Rating: (52)	Dear jamil, Your first step is correct. But for second step and 3^rd step please read this attachment. Regards. Attachment Resolution of SIWAREX MS.zip (487 Downloads)
Arunakat1 Posts: 217 Rating: (52)
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1/13/2009 2:45 PM	Rate (1)
Siwarexi Gold Expert Joined: 1/4/2007 Last visit: 12/17/2024 Posts: 1166 Rating: (175)	Hello, I would like to give you some information to the Siwarex MS module: 1) Into the internet, you can see the procedure, how to do a calibration with the Siwarex MS module, with the following link: http://support.automation.siemens.com/WW/view/de/26624348 I also attached a short file for you with the minimum settings into Siwatool for a calibration. 2) The tare-command is not retentive! If you want to have the tare-command retentive, you have to execute the command “2” after executing the tare-command. 3) You can download the library “Microscale_additional” from the internet: http://support.automation.siemens.com/WW/view/en/30347016 The current library “Microscale_V20” is only available at the configuration package CD. 4) There was a development since 04/2006: With the library “Microscale_V20” and the library “Microscale_additional” it is now possible to read/write datarecords from/to the Siwarex MS module. Best regards Attachment adjustment_SIWAREX_MS_Siwatool_en.pdf (489 Downloads)

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This contribution was helpful to 2 thankful Users Jamil_pk segan

1/14/2009 5:53 AM	Rate (0)
Jamil_pk Posts: 21 Rating: (0)	Thank you SIWAREXI, your reply was of very help for me. Can you please also advise, 1) Is Microscall ADDITIONAL compatible with V1.0 (though I will check, but just wanted to know if you have anything to say) 2) Can you tell me if there is any difference, in MICROSCALE V1.0 and V2.0? (I'm unsure why siemens sent me and older version, despite my purchasing a few months back, IS THERE AN UPDATE /SERVICE PACK FOR libraries?) Thanks once again and Kindest Regards, Jamil
Jamil_pk Posts: 21 Rating: (0)
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