Technical specifications   
A.3 Digital inputs and outputs expansion modules (EMs) 
  S7-200 SMART 
736  System Manual, V2.3, 07/2017, A5E03822230-AF 
Table A- 87  Connector pin locations for EM DR16 Digital 8 x Inputs / 8 x Relay Outputs (6ES7288-
2DR16-0AA0) 
2  M / 24 V DC  No connection  No connection  No connection 
 
Table A- 88  Wiring diagrams for the EM DT32 Digital 16 x Inputs / Digital 16 x Outputs (6ES7288-
2DT32-0AA0 and EM DR32 Digital 16 x Inputs / 16 x Relay (6ES7288-2DR32-0AA0) 
EM DT32 Digital 16 x Inputs / Digital 16 x Outputs 
(6ES7288-2DT32-0AA0) 
EM DR32 Digital 16 x Inputs / 16 x Relay 
(6ES7288-2DR32-0AA0)