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Difference between SFC communication and I/O communication
Created by: ddg at: 7/6/2009 5:09 PM (2 Replies)
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| 7/7/2009 9:24 AM | |
Joined: 1/4/2007 Last visit: 10/15/2024 Posts: 1147 Rating:
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Hello ddg, 1.The SFC communication reads/writes whole datarecords from/to the Siwarex U module (e.g. reading the datarecord DR31 with the gross weight, status, refresh counter, ...). With the SFC communication, you have access to all parameters of the Siwarex U module via Step7. 2.The I/O communication reads/writes always only one parameter from/to the Siwarex U module (e.g. reading the adjustment weigt). With the I/O communication, you have access to all parameters of the Siwarex U module via Step7. Please see also the FAQ into the internet by logging on to: http://support.automation.siemens.com/WW/view/en/17167112 3. If you have a new Siwarex U module (oder number 7MH4950-...) you can also use the FB45 for the communication between Step7 and the Siwarex U module. There exist a Step7 example project into the internet with the following link: http://support.automation.siemens.com/WW/view/en/28391777 Regarding the accuracy and the update time of the actual weight, there is no difference between the SFC communication,I/O communication or FB45 communication. The actual weight is calculated into the Siwarex U module, and is independent of the used communication mode. Best regards Siwarexi |
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| 1/16/2017 1:28 PM | |
Joined: 9/3/2014 Last visit: 3/13/2019 Posts: 4766 Rating:
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New question published by alanisgp is split to a separate thread with the subject Siwarex U module, faceplate freezes. Best regards |
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