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Module Communication

5/30/2012 1:01 PM	Rate (0)
MINKU Posts: 36 Rating: (0)	Hello experts I want to know that how i/o modules are communicationg with the CPU, what are the buses and protocols they follow to communicate with the CPU, because we simply plug in the modules toone another. Like in s7-200 there is cable to connect i/o module to the cpu,in 1200 we directly connect it to the bus connector and in 300 we just simply connect all modules directly tothe rail then how the cpu came to know that which module is connected at which place. Howit communictes. Please answer me.
MINKU Posts: 36 Rating: (0)
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5/30/2012 1:30 PM	Rate (0)
dchartier Grandmaster Joined: 9/27/2006 Last visit: 9/4/2025 Posts: 12397 Rating: (2717)	Hello Minku; Communication of I/O modules to the CPU uses what is known as P-Bus, K-Bus transports more complex information between the CPU and specialized modules (CPs, FMs). Possibly the information in this link can help clarify things: /tf/WW/en/Posts/57678 Hope this helps, Daniel Chartier
	Last edited by: dchartier at: 5/30/2012 1:31 PM
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