8/19/2019 7:12 PM | |
Joined: 2/8/2015 Last visit: 7/10/2024 Posts: 462 Rating: (9) |
Hello dear Jaz Tai, I have new question from you please: Because max scan cycle time for s7-400 is 6000 ms, so I think that cycle time of my program can be closer to 5000 or less than 6000 ms. But I mean net time and the alarm. -How can i sett the max limit for net time of all OBs (ob1, ob 3x, ob 8x) with scan cycle time? -Should I change the min cycle time to up? Best regards Tekabi ------------------------------------------------------------------------------------------ |
Last edited by: Tekabi at: 08/19/2019 19:18:26Last edited by: Jen_Moderator at: 08/20/2019 10:05:44New subject after splitting |
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8/20/2019 3:47 AM | |
Joined: 9/9/2015 Last visit: 9/25/2024 Posts: 727 Rating: (278) |
I do not know how to set the max limit for net time of OBs. "-Should I change the min cycle time to up?" I do not understand what this means. I think what you can do is, arranging the blocks/ runtime groups to slower OBs, for example, moving from 500ms to 1second. from 1second to 2 seconds. And then, for 1. Temperature related instruments 2. Visualization Blocks 3. Enable logic you can move these three items to slower OBs. This method will resolve your scan cycle issue hopefully. |
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8/28/2019 9:44 AM | |
Joined: 5/3/2017 Last visit: 5/21/2024 Posts: 673 Rating: (217) |
Hello Tekabi, in the application example Engineering and using of the function block "CPU_RT" you can find a lot of usefull information about the cycle performance analysis. And you can find a detailed description of the block CPU_RT with the I/Os in the manual PCS 7 Basis Library in the section CPU_RT: Determination of the runtime of OBs. With regards |
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