Maximum Configuration On One Rack - Siemens S7-300 Installation Manual

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The figure below shows the arrangement of eight signal modules on one rack.
Figure 5-4 Maximum configuration on one rack
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You will find information about the current consumption of modules in the technical
specifications, for example, in the 6 0RGXOH 'DWD 5HIHUHQFH 0DQXDO or in the
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S7-300 Automation System, Hardware and Installation: CPU 312IFM - 318-2 DP
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A5E00203919-01