S7 300 Plc
- Thread starter pa_1784
- Start date
Hello pa_1784;
Is it possible you mean a "backplane":
Extract from Siemens' S7-300 module data manual:
Hope this helps,
Daniel Chartier
Is it possible you mean a "backplane":
Extract from Siemens' S7-300 module data manual:
Backplane bus
The backplane bus is a serial data bus. It supplies power to the modules and is also used by the modules to communicate with each other. Bus connectors interconnect the modules.
Illustration of bus connectors:
Hope this helps,
Daniel Chartier
muthu_buddy
Member
Active Bus connector
I like to know if any of the intermediate modules in a back plane bus get spoiled will the modules after it, counting from CPU will still work or not?
I also heard of a term called active bus connector which allows the hot swappable modules in Siemens PLc's.
I like to know whether my theories were correct on this.
I like to know if any of the intermediate modules in a back plane bus get spoiled will the modules after it, counting from CPU will still work or not?
I also heard of a term called active bus connector which allows the hot swappable modules in Siemens PLc's.
I like to know whether my theories were correct on this.
PLucas
Member
muthu_buddy said:
The modules after the defective one will carry on working. As far as I am aware hot swapping of modules on a S7 300 rack is not allowed, the PLC will go into stop when a module is removed, plus you are breaking the back plane bus link, so you lose the other modules after the removed one as well.
Paul
Hello Paul and Muthu_buddy;
There is an active bus module that you can use on a remote S7-300 rack, not one with a CPU. It is used for example for a Y-Link setup (2 x IM157 as redundant DP-slaves on a S7-400-H system). But as you stated, Paul, on Rack 0 (which contains the CPU) this is not possible.
Hope this helps,
Daniel Chartier
There is an active bus module that you can use on a remote S7-300 rack, not one with a CPU. It is used for example for a Y-Link setup (2 x IM157 as redundant DP-slaves on a S7-400-H system). But as you stated, Paul, on Rack 0 (which contains the CPU) this is not possible.
Hope this helps,
Daniel Chartier
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