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PID control in S7-300

Created by: Michele Vie at: 9/10/2009 9:08 AM (3 Replies)

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9/10/2009 9:08 AM	Rate (0)
Michele Vie Posts: 25 Rating: (0)	Dear Experts ! I am a beginer of PID control in S7-300. I already read some document about PID control at this forum and manual for PID. I try to study PID sample (zEn01_13_Step7-temp) . I want to know why can not open almost FB in this project ? (My PC already install S7-SCL ) it shows message " this block is protected" . Do these FB have SCL code inside? Do I have to study SCL language to implement PID project? I intend design a PID project with 3 mode control correspoding 3 PID loop. mode1 - PID1 mode2- PID2 mode3-PID3 During process only one mode active ( other mode and other PID deactive) correspoding one PID active. Can I implement this PID project with basic PID? Please help me ! Thank You Inadvance!
Michele Vie Posts: 25 Rating: (0)	Last edited by: O_Moderator at: 9/10/2009 9:25 AM new subject atfer splitting
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9/10/2009 12:45 PM	Rate (0)
polle12 Posts: 38 Rating: (1)	You can't open PID blocks because they are KNOW_HOW_PROTECTED by Siemens. PID blocks are created in SCL language but you don't need SCL language to use them (I recommend to use FBD language).
polle12 Posts: 38 Rating: (1)
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9/10/2009 2:46 PM	Rate (0)
UMENCHO Diamond Member Joined: 3/21/2006 Last visit: 9/10/2024 Posts: 10228 Rating: (1181)	Hi, polle12 is right. Look at How can you install block protection for self-created blocks? Regards

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9/11/2009 9:00 AM	Rate (0)
Michele Vie Posts: 25 Rating: (0)	Thanks alot!
Michele Vie Posts: 25 Rating: (0)
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