Wago 750-333 PROFIBUS DP/V1 FIELD BUSCOUPLER 12 MBaud 750-333 Datenbogen

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2001-02-27

After switching on the controller recognises all I/O modules connected in the
node, which are waiting for or transmitting data (data width/bit width > 0). In
nodes analog and digital I/O modules can be fitted mixed.

Note
For the number of input and output bits or bytes of the individual switched on
I/O modules please refer to the corresponding description of the I/O modules.

The controller generates an internal local process image from the data width
and the type of I/O module as well as the position of the I/O modules in the
node. This is divided into an input and an output area.

The data of the digital I/O modules are bit orientated, i.e. the data exchange is
made bit by bit. The analog I/O modules are representative for all I/O modules
which are byte orientated, in which the data exchange is also made byte by
byte. These I/O modules also include, for example, counter modules, I/O mod-
ules for angle and path measurement as well as communication modules.

The data of the I/O modules is separated for the local input and output process
image in the sequence of their position after the controller in the individual
process image.

Note
If a node is changed or extended this may result in a new process image
structure. In this case the process data addresses also change in comparison
with earlier versions.