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Communication between s71200 and 10 microcontrollers (UART)

Created by: satch_jmd at: 1/31/2012 9:53 AM (3 Replies)

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1/31/2012 9:53 AM	Rate (0)
satch_jmd Posts: 9 Rating: (1)	Hello, I need a PLC to communicate with 10 microcontrollers using RS 485 and an ASCII protocol. I don't know if I can send and receive information from 10 different microcontrollers. I've read about PtP communication using the RS485 module but I'm not sure if I can do this. In addition, I'd like to monitor the different signals received from de MCUs using a HMI. Is that possible with the s71200?Other solutions? Thank you, regards.
satch_jmd Posts: 9 Rating: (1)	Last edited by: satch_jmd at: 1/31/2012 10:22 AM Last edited by: satch_jmd at: 1/31/2012 9:54 AM
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1/31/2012 11:14 AM	Rate (0)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 2/3/2023 Posts: 4178 Rating: (1324)	Hi, you can connect up to 32 nodes (paralell) in a RS 485 network segment. However the main question is: to it works, should give some "order" that avoid that two or more devices tries to send data at same time. If you have this "order", that ok. Else, it is not possible to use S7-1200 alone: It could support just 3 ptp modules.
	Denilson Pegaia Siemens Industry Sector Technical Support
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1/31/2012 11:55 AM	Rate (0)
satch_jmd Posts: 9 Rating: (1)	Thank you !
satch_jmd Posts: 9 Rating: (1)
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2/1/2012 11:11 AM	Rate (0)
Denilson Pegaia Platinum Expert Joined: 9/23/2005 Last visit: 2/3/2023 Posts: 4178 Rating: (1324)	You are Wellcome
	Denilson Pegaia Siemens Industry Sector Technical Support
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