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There is a control system in which the controller S7-300 must receive data from S7-200 with the communication processor EM 277 on PROFIBUS

8/27/2009 7:48 AM	Rate (0)
SerKor Posts: 1 Rating: (0)	There is a control system in which the controller S7-300 (CPU315 2PN) must receive data from S7-200 with the communication processor EM277 on PROFIBUS. There is a program in S7-200 and addresses of variables that should be read are known. The exchange must be performed by use FB14; configuration, i.e. installing of EM277 to the project for S7-300, has executed. The problem is appeared when the start address S7-200 is pointed in the program (the call FB14). Where can we found an example from which would clearly seen what is our error consists in?
SerKor Posts: 1 Rating: (0)
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8/27/2009 9:43 AM	Rate (0)
H-H Platinum Member Joined: 7/2/2008 Last visit: 12/21/2025 Posts: 929 Rating: (309)	Hello Serkor, Try to do the same as in this FAQ, How can you communicate data between the S7-200 and the S7-300 via PROFIBUS DP? Best regards. H-H

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8/28/2009 4:39 PM	Rate (0)
J_Bell Posts: 5822 Rating: (412)	Hello, I agree with H-H. An additional point that confuses me is your mentioned FB 14... I have no clue which function block you talk about. In my opinion you always use SFCs... like SFC 14 DPRD_DAT to get consistent data of 3 or more than 4 Byte. As mentioned, I am a bit lost... but maybe the sample already gets you where you want to go to. Best regards J_Bell
J_Bell Posts: 5822 Rating: (412)
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