The module has the following important characteristics:
• PROFINET IO connection (max. 100 Mbits/s)
• 72 digital inputs and 48 digital outputs
• On-board status display via 2 diagnostic LEDs
• The 3 plug-in connectors for the digital inputs and outputs are 50-pin terminal posts for 
connecting ribbon cables.
• Terminal strip converters can be used, or the direct connection of distribution boards, for 
example, is possible.
An external power supply unit (24 V DC) is required to supply the module and the digital outputs.
Illustration
①   Switch S1
②   LEDs H1 ... H6
③ X111 Digital input/outputs 1
④ X222 Digital input/outputs 2
⑤ X333 Digital input/outputs 3
⑥   Grounding screw
⑦ X1 Power supply connection
⑧ X2, port 1 PROFINET interface
⑨ X2, port 2 PROFINET interface
⑩   Mounting plate
Figure 12-7 PP 72/48D PN I/O module
Connectable components
12.2 PP 72/48D PN
NCU 1750
112 Equipment Manual, 01/2022, A5E45627807B AE