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| 5/25/2011 9:10 AM | |
Joined: 4/24/2006 Last visit: 3/14/2025 Posts: 8894 Rating:
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Dear amit_86, Please have a look at this link: how do you establish MODBUS-RTU communication with STEP 7 Basic V10.5 for the SIMATIC S7-1200? SIMATIC S7-300/S7-400 Loadable Driver for Point-to-Point CPs: MODBUS Protocol, RTU format, S7 is Slave Best regards, Wizard |
Last edited by: Wizard at: 5/25/2011 9:14 AMCable layout: CP341 pin 4 = A, pin 11 = B S7-1200 CM1241: pin 3 = B, pin 8 = A Connect A - A and B - B |
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| 5/25/2011 9:59 AM | |
Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating:
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Dear Wizard, i want to communicate s7200 with s7300. not S71200. please tell me is it possible? |
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VANDE MATARAM..... |
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| 5/25/2011 10:12 AM | |
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Joined: 4/24/2006 Last visit: 3/14/2025 Posts: 8894 Rating:
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Hello amit_86, OOOooops, sorry, did not read very carefully. Yes also using S7-200 is no problem. Here is manual: S7-200 System manual See chapter 12. You need Modbus instruction library: 6ES7830-2bc00-0yx0 Where in STEP 7 Micro/WIN can I find the operations libraries for the Modbus RTU protocol and ?USS protocol? S7-200: Pin 3 = B and Pin 8 = A. Advise: use a S7-200 CPU with two ports, one for Modbus and the other for PPI (Programming port) Best regards, Wizard |
| 5/25/2011 12:05 PM | |
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Posts: 272 Rating:
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Dear Amit, You will have to purchase Modbus & USS library to configure S7 200 and then dongle for 341-2 to configure it as modbus slave. |
| 5/27/2011 8:02 AM | |
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Joined: 3/18/2008 Last visit: 12/8/2023 Posts: 1750 Rating:
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Dear All, Thanks for your valuable suggestion. |
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VANDE MATARAM..... |
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