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Why option "one way" communication is not available?

Created by: Basketballer at: 2/22/2021 7:37 AM (7 Replies)

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2/22/2021 7:37 AM	Rate (0)
Basketballer Experienced Member Joined: 2/20/2018 Last visit: 8/14/2024 Posts: 46 Rating: (0)	Hi. Please take a look into attachement. I have strange information about "connection resources has been reached" but I did not configure any connection in my system yet. I know that system inform me also about all connection resources available but I want to know why this warning appears? And second question is: why option "one way" communication is not available? I have S7 communication configured with one active and one passive (I heard that active is a master, and passive is a slave...). Regards. ------------------------------------------------------------------------------------------ Split from Number of connections with S7-1200. Attachment image.png (212 Downloads)
	Last edited by: Basketballer at: 02/22/2021 08:49:07 Last edited by: Jen_Moderator at: 02/22/2021 11:38:46 New subject after splitting Adam
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2/22/2021 8:44 AM	Rate (0)
qwazee Platinum Member Joined: 3/30/2020 Last visit: 11/7/2024 Posts: 4932 Rating: (1008)	Basketballer Hi. Please take a look into attachement. I have strange information about "connection resources has been reached" but I did not configure any connection in my system yet. I know that system inform me also about all connection resources available but I want to know why this warning appears? Regards. It is a UI issue and does not represent the real situation. Have you checked what happens when viewing that information table when being online with an actual PLC?
	Last edited by: qwazee at: 02/22/2021 08:45:54 Activities of this user is voluntary. There is no obligation or liability placed on this user. Though optional, your 'please' and 'thank you' is highly valued.
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2/22/2021 8:57 AM	Rate (0)
Basketballer Experienced Member Joined: 2/20/2018 Last visit: 8/14/2024 Posts: 46 Rating: (0)	qwazee It is a UI issue and does not represent the real situation. Have you checked what happens when viewing that information table when being online with an actual PLC? Yes, situation is the same in online mode. Prove - picture from attachement. Next question is: why option "one way" communication is not available? I have S7 communication configured with one active and one passive (I heard that active is a master, and passive is a slave...). Attachment images.png (206 Downloads)
	Last edited by: Basketballer at: 02/22/2021 08:58:34 Adam
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2/22/2021 9:24 AM	Rate (0)
qwazee Platinum Member Joined: 3/30/2020 Last visit: 11/7/2024 Posts: 4932 Rating: (1008)	Basketballer qwazee It is a UI issue and does not represent the real situation. Have you checked what happens when viewing that information table when being online with an actual PLC? Yes, situation is the same in online mode. Prove - picture from attachement. Next question is: why option "one way" communication is not available? I have S7 communication configured with one active and one passive (I heard that active is a master, and passive is a slave...). why option "one way" communication is not available? How does this apply to resource usage? A channel / port is occupied regardless if "one way" or "two way" communication. I heard that active is a master, and passive is a slave There is a difference between what people choose as convention and what actually constitute "master" and "slave". Approach this as a "sender" and "listener". There is nothing wrong with having an active listener when the situation needs it.. it is just against the expected convention. What of all these multiple questions actually help you to solve your application issues? I find no rhyme and reason for these enquiries.
	Last edited by: qwazee at: 02/22/2021 15:11:55 fix formatting Activities of this user is voluntary. There is no obligation or liability placed on this user. Though optional, your 'please' and 'thank you' is highly valued.
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2/22/2021 9:57 AM	Rate (0)
Basketballer Experienced Member Joined: 2/20/2018 Last visit: 8/14/2024 Posts: 46 Rating: (0)	qwazee why option "one way" communication is not available? How does this apply to resource usage? A channel / port is occupied regardless if "one way" or "two way" communication. My question was not related with before, sorry for the form. I would like to only ask about it undependent of before question. Kindly please answer. qwazee I heard that active is a master, and passive is a slave There is a difference between what people choose as convention and what actually constitute "master" and "slave". Approach this as a "sender" and "listener". There is nothing wrong with having an active listener when the situation needs it.. it is just against the expected convention. I understand this. qwazee What of all these multiple questions actually help you to solve your application issues? I find no rhyme and reason for these enquiries. I must quickly start communication with all important aspects. Never did it before so the forum and you are my hope, I am very thankfull but I need a little bit more confidence with this all, please understand me. [snip]
	Last edited by: Basketballer at: 02/22/2021 10:11:46 Last edited by: Jen_Moderator at: 02/22/2021 11:42:18 Division of questions into separate topics. Adam
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2/22/2021 11:42 AM	Rate (0)
Jen_Moderator Diamond Member Joined: 6/19/2017 Last visit: 9/6/2024 Posts: 8175 Rating: (172)	New question published by Basketballer is split to a separate thread with the subject Is it possible to use optimized blocks for exchange the data between two PLC via S7 connection?. Best regards Jen_Moderator

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2/22/2021 2:13 PM	Rate (0)
mopS04 Platinum Expert Joined: 3/5/2014 Last visit: 8/5/2022 Posts: 5521 Rating: (1054)	hi Basketballer, one-way-connection just means that this connection is configured only in this PLC. Because Siemens blocks need an connection-ID to refereing the connection to send or receive with, you can only operate with this connection from the PLC where the conneciton is build. The other PLC is just server for PUT/GET. So the other PLC could be accessed without any engineering in its project. this is only possible with S7-connection. Have a look to this FAQ(point 7): How you configure a connection in the TIA Portal? hope this helps, regards
	FCK WAR! Be nice!
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2/23/2021 9:01 AM	Rate (0)
Basketballer Experienced Member Joined: 2/20/2018 Last visit: 8/14/2024 Posts: 46 Rating: (0)	Thanks for help. When I try to enable "one way connection" option it is unavailable (option is unactive), why? See picture please. Attachment image.png (185 Downloads)
	Adam
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