Siemens Simatic S7-400 User Manual Page 167

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Digital Modules
4-45
S7-400, M7-400 Programmable Controllers Module Specifications
A5E00069467-07
Terminal Assignment and Block Diagram of the SM 421; DI 16 24/60 VUC
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Input
Diagnostics
Adaptation
Adaptation
Adaptation
Adaptation
Adaptation
Adaptation
Adaptation
Adaptation
Adaptation
Adaptation
Adaptation
Adaptation
Adaptation
Adaptation
Adaptation
Input
Diagnostics
Diagnostics
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Diagnostics
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Diagnostics
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Diagnostics
Diagnostics
Input
Diagnostics
Input
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Diagnostics
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Diagnostics
Diagnostics
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Diagnostics
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Input
Diagnostics
Input
Diagnostics
Diagnostics
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Diagnostics
Input
Data register and bus control
Adaptation
Process
Front connector jumper
Module
Figure 4-9 Terminal Assignment and Block Diagram of the SM 421; DI 16 24/60 VUC
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