Siemens SIMATIC ET 200pro Manual page 57

Grouping modules in User-configured mode
No grouping
If you do not want to group your digital output modules in a single byte, use only modules
without the " * " designation in the Configuration Tool hardware catalog. Each electronic
module will then occupy one byte in the process image.
ET 200pro distributed I/O EtherNet/IP interface module
Manual, 03/2016, A5E32861915-AB
Commissioning
5.3 Grouping electronic modules
57