4/17/2008 5:12 PM | |
Joined: 9/27/2006 Last visit: 9/21/2024 Posts: 12282 Rating: (2684) |
Hello Dutta; I understand that you want to use the ET 200M station so you can remove/insert modules under power. For that you have to parametrize the IM 153-2 to allow online change of hardware. The following FAQ will show you what you need to do: http://support.automation.siemens.com/WW/view/en/1826766 Hope this helps, Daniel Chartier |
10/30/2019 2:21 PM | |
Posts: 5 Rating: (0) |
HI WHY ACTIVE BUS MODULE IS USED , DO ANY ONE HAS THE EXACT DEFINITION ON THAT |
10/30/2019 3:50 PM | |
Joined: 9/27/2006 Last visit: 9/21/2024 Posts: 12282 Rating: (2684) |
Hello susacc; The S7-300 and ET 200M stations are built on the same format, using U-connector to connect all modules (including the CPU) to each other. This U-connector (being a serial, point-to-point connection) does not allow a module to be removed from the mounting rail without cutting the link between the modules. Doing so while power is on could cause damage to the S7-300 modules, and will certainly bring the CPU to STOP mode. If your design requires an ET 200M station to be used as a redundant slave (to a S7-400H system) or if you need to enable removing/replacing a module while power is ON then you need to have the equivalent of an active backplane(a parallel connection), such as the S7-400 has on its rack. You can install the active bus modules by selecting a special deep-profile mounting rail for the S7-300 modules, and installing vairous active backplane modules, described in the screenshot below, taken from this manual: SIMATIC Distributed I/O device ET 200M https://support.industry.siemens.com/cs/ww/en/view/1142798 For example, if you need a redundant design for the ET 200M, it requires dual IM 153-2 station heads, so you need to start with an IM/IM active bus module, and add as many BM 2x40 bus modules to hold the number of 40 mm-wide I/O modules in your rack. Note that you can install active bus modules on the ET 200M stations only, you cannot install them on the S7-300 central rack. Order numbers for the active bus modules can be found in Appendix B of the manual proposed. Hope this helps, Daniel Chartier |
Last edited by: dchartier at: 10/30/2019 16:00:19Last edited by: dchartier at: 10/30/2019 19:37:34 |
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