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SHL command Problem

Created by: ZivTw at: 9/4/2020 9:18 AM (7 Replies)

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9/4/2020 9:18 AM	Rate (0)
ZivTw Posts: 5 Rating: (0)	Hi, I encountered a situation, when I used SCL I try the SHL(IN:=2#0000_0001, N:=2); command, but result is zero? and I retry the I try the SHL(IN:=2#0000_0010, N:=2); command, the result is 8, it right! What happen?
ZivTw Posts: 5 Rating: (0)	Last edited by: JedTw at: 09/04/2020 09:46:47
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9/4/2020 9:30 AM	Rate (0)
jacek d Platinum Member Joined: 9/23/2005 Last visit: 12/22/2025 Posts: 5147 Rating: (772)	Is the IN value the only thing you changed ? What happens if you change it back to 2#1 ?
	Regards, Jacek What is confusing you is the fact that you never see a number but always its digit representation. So you end up thinking that the number is the representation. - Andrej Bauer Any claims against me - based on whatever legal reason - resulting from the use of any code and/or ideas presented on this forum shall be excluded. #StayWithUkraine
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9/4/2020 9:44 AM	Rate (0)
ZivTw Posts: 5 Rating: (0)	jacek d Is the IN value the only thing you changed ? What happens if you change it back to 2#1 ? 1.I want use 0x01 to shift make bit mask 2.I try change 2#1 to 2#10 and 2#11 , the result is right
ZivTw Posts: 5 Rating: (0)
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9/4/2020 9:58 AM	Rate (0)
jacek d Platinum Member Joined: 9/23/2005 Last visit: 12/22/2025 Posts: 5147 Rating: (772)	Please supply PLC order number/FW version and used software versions.
	Regards, Jacek What is confusing you is the fact that you never see a number but always its digit representation. So you end up thinking that the number is the representation. - Andrej Bauer Any claims against me - based on whatever legal reason - resulting from the use of any code and/or ideas presented on this forum shall be excluded. #StayWithUkraine
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9/4/2020 10:22 AM	Rate (0)
ZivTw Posts: 5 Rating: (0)	jacek d Please supply PLC order number/FW version and used software versions. CPU:6es7414-5hm06-0ab0 / FW: V6.0.9 software:STEP7 V5.6+SP1
ZivTw Posts: 5 Rating: (0)
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9/4/2020 11:24 AM	Rate (0)
jacek d Platinum Member Joined: 9/23/2005 Last visit: 12/22/2025 Posts: 5147 Rating: (772)	Unfortunately I do not have such an equipment available and I can't cross check. You can send a support request ticket.
	Last edited by: jacek d at: 09/04/2020 11:28:20 Regards, Jacek What is confusing you is the fact that you never see a number but always its digit representation. So you end up thinking that the number is the representation. - Andrej Bauer Any claims against me - based on whatever legal reason - resulting from the use of any code and/or ideas presented on this forum shall be excluded. #StayWithUkraine
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9/4/2020 3:57 PM	Rate (0)
ZivTw Posts: 5 Rating: (0)	jacek d Unfortunately I do not have such an equipment available and I can't cross check. You can send a support request ticket. Thank you for support :)
ZivTw Posts: 5 Rating: (0)
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9/18/2020 11:05 AM	Rate (0)
bit7 Bronze Member Joined: 7/26/2008 Last visit: 12/10/2025 Posts: 110 Rating: (20)	Hi JedTw, tried to re-created your scenario. Used Step 7 V5.6 SP1 + HF1. I tried to keep code as compact as possible. Simulator supplied correct result, see attached screen shot. Attachment Shifted.png (391 Downloads)

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This contribution was helpful to 1 thankful Users ZivTw

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