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SFB12 and SFB13 with CP 343-1EX11-0XE0

Created by: Au2Mation at: 4/14/2009 7:23 PM (3 Replies)

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4/14/2009 7:23 PM	Rate (0)
Au2Mation Posts: 8 Rating: (0)	Hello, I actually have five CPU S7 400 with CP 443-1EX11 communicating between themselves using SFB12(BSEND) and SFB13(BRCV) as standard blocks for communication. I have added an new PLC S7-300 to network and I was trying to use the same blocks to communicate between S7-300 and one of the others S7-400 and I can't. I'm using the following CPs: 343-1EX11-0XE0 for S7-300 (CPU:313-5BF03-0AB0) and 443-1EX11-0XE0 for S7-400 (CPU:412-2XG00-0AB0) I have reading in the forum that it's not possible to use this blocks in the CP 343. That's true? In this case, which are the standard blocks available to communicate with CP 443? Thank's in advance.
Au2Mation Posts: 8 Rating: (0)
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4/14/2009 8:45 PM	Rate (0)
INS Gold Member Joined: 4/6/2006 Last visit: 1/21/2019 Posts: 604 Rating: (56)	Hi, The answer is FB12 and FB13. I think this FAQ will be very helpfull for you: How do you program communication blocks FB12 "BSEND" and FB13 "BRCV" for data exchange on the S7-300?
	Best regards, INS
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4/15/2009 9:19 PM	Rate (0)
Au2Mation Posts: 8 Rating: (0)	Thank you INS, Just after try a bit , now the communication is working Ok between S7-300 and my S7-400 . Just only one thing to keep in mind just if anybody don't knows: According to my communication test between the two PLCs, I found that it's very important to use the FB12 and FB13 from S7-300 side and for S7-400 side we must use the SFB12 and SFB13 . I tried to use FB12 & FB13 in both PLC (300 & 400) and my PLC S7-400 went to STOP. I found the following note in the forum: What should you watch out for when configuring an unspecified S7 connection for data communication between an S7-300 and an S7-400? Thank's again.
Au2Mation Posts: 8 Rating: (0)
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4/16/2009 9:11 AM	Rate (0)
INS Gold Member Joined: 4/6/2006 Last visit: 1/21/2019 Posts: 604 Rating: (56)	Hi, Thanks for your feedback.
	Best regards, INS
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