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Siemens SIMATIC TOP connect Manual page 79

System cabling
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Front connector modules 6ES7921-3AA00-0AA0 and 6ES7921-3AB00-0AA0
Front connector modules for digital 16 I/O modules of S7-300:
● 6ES7921-3AA00-0AA0 spring-loaded terminals
● 6ES7921-3AB00-0AA0 screw-type terminals
Note
The terminal assignments of these front connector modules are unambiguous, so dimension
drawings can be omitted.
Front connector modules 6ES7921-3AC00-0AA0 and 6ES7921-3AD00-0AA0
Front connector modules for 2 A digital outputs:
● 6ES7921-3AC00-0AA0 spring-loaded terminals
● 6ES7921-3AD00-0AA0 screw-type terminals
Note
The terminal assignments of these front connector modules are unambiguous, so dimension
drawings can be omitted.
Front connector modules 6ES7921-3AF00-0AA0 and 6ES7921-3AG00-0AA0
Front connector modules for analog modules, 20-pin:
● 6ES7921-3AF00-0AA0 spring-loaded terminals
● 6ES7921-3AG00-0AA0 screw-type terminals
For additional information, see Note on connecting analog I/O modules (Page 49).
Front connector modules 6ES7921-3AF20-0AA0 and 6ES7921-3AG20-0AA0
Front connector modules for analog modules, 40-pin:
● 6ES7921-3AF20-0AA0 spring-loaded terminals
● 6ES7921-3AG20-0AA0 screw-type terminals
For additional information, see Note on connecting analog I/O modules (Page 49).
System cabling for S7-300
Manual, 09/2018, 70327045899
Dimension drawings
A.1 Front connector modules
79
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S7-300

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