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Exchange variables between 2 CPUs

Created by: jinga at: 10/23/2013 2:44 PM (4 Replies)

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10/23/2013 2:44 PM	Rate (0)
jinga Posts: 26 Rating: (2)	Hi! I'm a newbie with Siemens PLC and TIA Portal. I'm creating a project with 2 CPUs (1215C DC/DC/RLY and 1214C DC/DC/RLY). In TIA Portal I created a S7 connection between them, but I have a problem. I need to use a variable (type of value Int) of a FB in 1214C in a block in 1215C. I've tried with FB PUT and GET but I don't kow how to set ADDR and SD parameters... Is there another way I can do that? Thank you in advance. Valeria
jinga Posts: 26 Rating: (2)
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10/23/2013 5:11 PM	Rate (0)
billwest Posts: 510 Rating: (120)	Section 7.8.3 of the Easy Book will help you through the set up. Here is a link to the Easy Book: http://support.automation.siemens.com/WW/view/en/39710145 Good Luck, billwest
billwest Posts: 510 Rating: (120)
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10/24/2013 10:58 AM	Rate (0)
jinga Posts: 26 Rating: (2)	I'm sorry but even though I read the easy book I still don't understand how to make it work. How do I copy just 1 variable? For example, I need to use the variable %IW96 of the program on CPU2 in the program of CPU1...Do I have to insert that variable in the DB created with the block get? Or, better, is there a way to specify an address like P#..for each variable?
jinga Posts: 26 Rating: (2)
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10/24/2013 2:58 PM	Rate (0)
0_Einstein Diamond Expert Joined: 7/7/2010 Last visit: 1/17/2025 Posts: 15541 Rating: (2465)	jinga I'm sorry but even though I read the easy book I still don't understand how to make it work. How do I copy just 1 variable? For example, I need to use the variable %IW96 of the program on CPU2 in the program of CPU1...Do I have to insert that variable in the DB created with the block get? Or, better, is there a way to specify an address like P#..for each variable? If you use get/put, look at the instruction helpto see how to define the memory area (DB / Input / Output / Memory). Highlight (click on)the get or put block in your logic and press the F1 key.
	science guy
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10/25/2013 8:36 AM	Rate (0)
jinga Posts: 26 Rating: (2)	Ok, thank you! I finally made it...even though I had to move the value of the TC channel to a db to make it work...
jinga Posts: 26 Rating: (2)
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