9/12/2018 4:01 PM | |
Joined: 5/28/2008 Last visit: 8/27/2024 Posts: 4515 Rating:
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Hello RAKIB, First you cann't read all what you mentioned above from Softstarter. You can only read current. As you said you have two bytes input and two bytes output. In page 170 & 171 of the bellow manual, you will found the process image for each bit in DO / DI https://support.industry.siemens.com/cs/ww/en/view/21772518 To read current, please note that it can be read in bits DI-1.0 to DI1.5 (6 bits) knowing that there's a mistake in the manual (new version)-- Old version is correct (Page 8-24) -- To calculate current values from the 6-bits, please see current values section in page 180 of first manual. I think you may need to make a FC to use for all your softstarter. It's easy. I have made it once and it's working perfect. |
Ayman Elotaify |
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1 thankful Users |
9/13/2018 10:55 AM | |
Joined: 9/28/2017 Last visit: 8/28/2024 Posts: 64 Rating:
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Dear Ayman Elotaify, Thanks for the advice. Can you just share the fc to read the current or kindly explain the code? thanks. |
9/13/2018 2:40 PM | |
Joined: 10/15/2007 Last visit: 6/4/2024 Posts: 46 Rating:
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Dear RAKIB , I think (!) the statement above is not completely true.....
https://support.industry.siemens.com/cs/ww/en/view/21772518 Those data sets/data records can be written / read via SFB 53 "WR_REC" / SFB 52 "RD_REC" ( compare with FAQ https://support.industry.siemens.com/cs/ww/en/view/81666674 which shows reading / writing data records with an S7-1200 CPU) Example "9.12.11 Data set 94 - Reading measured values" Example "9.12.12 Data set 95 - Reading statistical data" kind regards PS: And if you are using PCS7 there exists a "SIRIUS Soft Starter 3RW44 PCS 7 Library" which might ease the access to the information / data you require :-) |
Last edited by: LostMyMind at: 9/13/2018 2:58:47 PM |
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9/17/2018 4:13 PM | |
Joined: 5/17/2010 Last visit: 5/22/2024 Posts: 226 Rating:
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Be aware on the additional PLC load and bus load of acyclic communication (reading data sets). |
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9/21/2018 9:44 PM | |
Joined: 9/28/2017 Last visit: 8/28/2024 Posts: 64 Rating:
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What would be the solution to my problem?? |
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