Siemens SIMATIC S7 System Manual page 766

Technical specifications
A.6 Digital signal boards
Table A- 136 Wiring diagram for the SB DT04 2 Digital Input/2 Digital Output (6ES7288-5DT04-0AA0)
SB DT04 2 Digital Input/2 Digital Output (6ES7288-5DT04-0AA0)
Table A- 137 Connector pin locations for SB DT04 2 Digital Input/2 Digital Output (6ES7288-5DT04-
766
0AA0)
Pin X19
1 DQ f.0
2 DQ f.1
3 DI f.0
4 DI f.1
5 L+ / 24 V DC
6 M / 24 V DC
System Manual, V2.3, 07/2017, A5E03822230-AF
S7-200 SMART