Siemens SIMATIC TOP connect Manual page 94

Circuit diagrams
B.1 Front connector modules S7-300
Connecting terminals in
Spring-loaded terminal system: 6ES7921-3AF00-0AA0
Screw-type system: 6ES7921-3AG00-0AA0
Figure B-6
Front connector module 6ES7921-3AF20-0AA0 / 6ES7921-3AG20-0AA0
For S7-300 / ET200M, analog 40-pin I/O module
Front connector module with potential supply
Connecting terminals in
Spring-loaded terminal system: 6ES7921-3AF20-0AA0
Screw-type system: 6ES7921-3AG20-0AA0
Figure B-7 6ES7921-3AF20-0AA0 / 6ES7921-3AG20-0AA0
94
6ES7921-3AF00-0AA0 / 6ES7921-3AG00-0AA0
System cabling for S7-300
Manual, 09/2018, 70327045899