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how to declare constant array in s7 1200

Created by: newbieplc1200 at: 4/3/2013 12:38 PM (4 Replies)

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4/3/2013 12:38 PM	Rate (0)
newbieplc1200 Posts: 30 Rating: (1)	I want to declare a constant arrays in DB block of s71200. ex: myarrays[1,3,4,6,5,8,11,13]....etc. My array has 8 elements. But i don't know which methol to declare it quickly, I only know the way that i declare a array[lo....hi] in DB, then in my programe I use 8 times "Move instruction" to wirte [ 1,,3,4,...13] in to myarray[], but this way seems slowly, Because, if I need declare a array with 100 elements so I have use 100 "Move instruction" to wirte my constanst value into mayarrays[]. How can i do this work better ? thanks I know in C language program, It's easy way : ex: myarrays[100] = { 1,3,4,5............};
newbieplc1200 Posts: 30 Rating: (1)
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4/3/2013 2:58 PM	Rate (1)
0_Einstein Diamond Expert Joined: 7/7/2010 Last visit: 9/26/2023 Posts: 13723 Rating: (2241)	If you create a DB with an array tag, you can assign the initial values to your array in the DB definition. Provided you never change the values, they will remain constant at whatever values are defined as the initial values.
	science guy
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This contribution was helpful to 1 thankful Users Tomy Master

4/3/2013 3:57 PM	Rate (0)
newbieplc1200 Posts: 30 Rating: (1)	I don't know exactly what you said about, Can you explain detail or give me a small example? please
newbieplc1200 Posts: 30 Rating: (1)
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4/3/2013 4:07 PM	Rate (0)
0_Einstein Diamond Expert Joined: 7/7/2010 Last visit: 9/26/2023 Posts: 13723 Rating: (2241)	newbieplc1200 I don't know exactly what you said about, Can you explain detail or give me a small example? please See image. Refer to documentation (Press F1 for help) on creating DB (database or data block). Attachment C:\TEMP\SampleDB_Setup.jpg (834 Downloads)
	science guy
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4/4/2013 6:50 AM	Rate (0)
Nelliyan randy Posts: 461 Rating: (29)	Hello, Already huggy gave u the solution , i just elaborating it in the PDF attached.. Hope it helps Regards, Nelliyan.G Attachment Array Declaration.pdf (706 Downloads)
Nelliyan randy Posts: 461 Rating: (29)
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