5/23/2016 5:45 PM | |
Joined: 9/27/2006 Last visit: 9/4/2024 Posts: 12282 Rating:
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Hello sunny; The S7-300 I/O modules can be used in PCS 7 as part of a Profibus/Profinet slave configuration (ET 200M). The S7-400 I/O modules can be used as part of the central/remote racks with s7-400 CPUs Apart from that, the form factor is different between the 2 families, the communication uses an active (parallel) backplane on a S7-400 rack, whereas for the S7-300 (also with the ET 200M bus head) uses a serial bus connector, so the data exchange can be slower with the I/O modules. The variety of modules designed for the S7-300 (ET 200M) system is quite extended, more numerous with more variations. To have an understanding of all digital and analog I/O modules in the two CPU families, look at the following documents: SIMATIC S7-300 S7-300 Module data https://support.industry.siemens.com/cs/ww/en/view/8859629 SIMATIC S7-400 S7-400 Automation System Module Data https://support.industry.siemens.com/cs/ww/en/view/1117740 Hope this helps, Daniel Chartier |
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