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Ethernet communication S7 S300 / S7 400

5/20/2010 9:44 AM	Rate (0)
Obi Wan Posts: 9 Rating: (2)	Hi, I want to know if the standard of communication ethernet of plc S7 300 and S7 400 it is the same. a driver for read / write date (input, outputs, DB, merker, etc) 'hang' this data from communication procesor (for example CP 341-1 or CP 443-1) or from central processing unit (for example CPU 414-2) ?? I ask this because in configuration of driver DASSIdirect (Wonderware - Intouch) and libnodave (open source) it is necessary to configure the slot number of CPU. Bye
Obi Wan Posts: 9 Rating: (2)
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5/20/2010 4:20 PM	Rate (0)
little holmes Experienced Member Joined: 12/9/2009 Last visit: 4/18/2024 Posts: 156 Rating: (11)	Hello, in the following articles you can find an overview about the services which are suppported by the CP343-1 and CP443-1: http://support.automation.siemens.com/WW/view/en/16767769 and http://support.automation.siemens.com/WW/view/en/22709752 Best regards Little Holmes
	Last edited by: little holmes at: 5/20/2010 4:22 PM
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5/21/2010 7:22 AM	Rate (0)
umencho Diamond Expert Joined: 3/21/2006 Last visit: 3/14/2025 Posts: 10239 Rating: (1183)	Hello, Perhaps is helpful - Where can you find sample S7 programs and documentation for communication via Industrial Ethernet in the SIMATIC NET Quick Start Collection? Best regards, Hristo Mihalev

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