Siemens Simatic S7-300 CP 341 - Figure 2-1 10-Bit Character Frame

Basic Principles of Serial Data Transmission
2.1 Serial Transmission of a Character
CP 341 Point-to-Point Communication, Installation and Parameter Assignment
Manual, 09/2008, A5E02191071-01 31
Character frame
Data is transmitted between the the CP 341 and a communication partner via the serial
interface in a character frame. Three data formats are available for each character frame.
You can assign the desired format for data transmission in the CP 341: Point-to-Point
Communication, Parameter Assignment parameter assignment interface.
The figure below shows an example of the three data formats of the 10-bit character frame.
1 2 8 9 10
1 2 109
1 2 8 109
GDWDELWVVWDUWELWGDWDELWVVWRSELWV
6LJQDOVWDWHಯಯ
6LJQDOVWDWHಯಯ
6LJQDOVWDWHಯಯ
6LJQDOVWDWHಯಯ
6LJQDOVWDWHಯಯ
6LJQDOVWDWHಯಯ
VWDUWELW
VWDUWELW
VWDUWELW
GDWDELWV
VWRSELWV
GDWDELWVVWDUWELWGDWDELWVSDULW\ELWVWRSELW
GDWDELWVVWDUWELWGDWDELWVVWRSELW
GDWDELWV SDULW\ELW
VWRSELW
VWRSELW
GDWDELWV
Figure 2-1 10-bit character frame
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