Process I/O Image size in SIEMENS

Iman

Member
Join Date
Jul 2010
Location
Tehran
Posts
172
Hey Guys,
I've seen a table in CPU s7-400 specification document in Memory Concept chapter. It says that for each byte of Inputs and Outputs in Process I/O Image , it takes 12 bytes for sizing. I thought they should be same. I mean If I want to assign an input byte in Process I/O Image why should it takes 12 bytes for that input in Process I/O Image ? And also I have the same question in other entries of this table. I've attached the table to this message.
Any responses of each entry of the table is appreciable.This is for my interest and learn the fundamentals issues.
Thank you.

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