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socrames
Junior
Joined: 15 Jan 2019
Posts: 14
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 Posted: 09/02/2021 11:27 Post subject: MOVE_BLK_VARIANT error 16#8382 |
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Hi there,
I'm working inside a non-optimized global DB : my DB83 has components of the type "Array[0..15] of Bool"
I'm trying to copy the values of 6 MW from one place to another.
Value of MW302-MW307 copied to MW2302-MW2307 inside global DB83.
So I used MOVE_BLK_VARIANT with the following parameters :
- src: %DB83
- count: 6
- src_index: 302
- dest_index: 2302
The error code I get (16#8382) seems to be linked to the value of parameter SRC_INDEX being negative although I've put 302 as SRC_INDEX.
Am I missing something here please ?
Thanks for your inputs
[img]http://www.99poze.ro/h/3cfafb5ec69fdc78758dda6938d23499.jpg[/img] |
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Prahaap Arheb
Junior
Joined: 30 Oct 2018
Posts: 2
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| Posted: 09/02/2021 15:06 Post subject: |
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f | Code: | or #idx:=0 to 9 do
MOVE_BLK_VARIANT(SRC := #Source_data>,
COUNT := 1
SRC_INDEX := 0
DEST_INDEX := must be 0 (at S7-1200!!!)
DEST => Dest_data[#idx]);
End_for; |
Rules for data copy operations
• To copy the Bool data type, use SET_BF, RESET_BF, R, S, or output coil (LAD)
(Page 224)
• To copy a single elementary data type, use MOVE
• To copy an array of an elementary data type, use MOVE_BLK or UMOVE_BLK
• To copy a structure, use MOVE
• To copy a string, use S_MOVE (Page 339)
• To copy a single character in a string, use MOVE
• The MOVE_BLK and UMOVE_BLK instructions cannot be used to copy arrays or
structures to the I, Q, or M memory areas.
https://cache.industry.siemens.com/dl/files/465/36932465/att_106119/v1/s71200_system_manual_en-US_en-US.pdf |
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socrames
Junior
Joined: 15 Jan 2019
Posts: 14
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| Posted: 10/02/2021 10:52 Post subject: |
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Thanks Prahaap Arheb. I understand that with MOVE_BLK_VARIANT, I need to copy the arrays one by one, so a for-loop is needed.
Eventually, I ended up using a combination of PEEK, POKE and POKE_BLK to reach my goal
But I find very useful your "Rules for data copy operations"
I'll keep it in mind for future use |
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