6/1/2012 9:01 PM | |
Posts: 22 Rating: (0) |
What is the IM 365 Send/Receive modules used for? Thanks |
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6/1/2012 9:38 PM | |
Joined: 9/27/2006 Last visit: 9/21/2024 Posts: 12282 Rating: (2684)
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Hello monroe; CPUs of the S7-300 family can only support 8 modules (SMs, CPs, FMs) on the main rack. If you wish to use more modules, you need to expand the system by adding a remote rack, which can hold another 8 modules. Exchanges between the main rack and the remote rack are handles by Interface modules; for the S7-300 family there are 2 types of IMs: IM 365, and IM 360/361. They extend the CPU's backplane bus to the remote rack, but with different specifications. If8 more modulesis enough for your project, and you only use I/O modules (SMs)in the remote rack, then you can use a IM 365 (interface module). It consists of a pair of communication units (Send and Recieve) connected by a 1 m cable. So it is basicaly used forlocation of the remote rack inside the same panel as the main CPU rack. If you need to use more than one expansion rack (you can have up to 3), or the distance between the main and remote racks is more than a meter (up to 10 m) or you wish to use modules that require the K-Bus (communication bus for CPs and FMs), then you need a IM 360/361 pair, along with the special cable 386). You can find more details on these IMs in the S7-300 Module data manual, chapter 8: SIMATIC S7-300 S7-300 Automation System Module Data |
Last edited by: dchartier at: 6/1/2012 9:39 PM |
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