WAGO-I/O-SYSTEM 750
Function Description
81
750-375 PROFINET IO advanced Fieldbus Coupler
Manual
Version 1.1.0
•
Submodule types that allocate data
(in byte, word or double word sizes)
•
Submodule types that do not allocate any data
(whose information is classified in previously allocated data ranges)
Submodule types that allocate data
To map process data from digital input and output modules to larger data
structures, you can select submodule types that allocate a corresponding number
of additional bits for each digital I/O module in addition to the data volume of the
physical channels, so that you achieve the required data structure size.
Submodule types for allocation of 8, 16 or 32 bits are available to you.
The name of the allocating submodule types contains the "+" character plus the
remaining available number of bits of the process input and/or output data.
Example:
The "2DE, 2DIA (+14 BIT I/O)" submodule type is suitable for a module
with 2 digital inputs with diagnostics capability and each one bit diagnostic
acknowledgement per channel in the output image, whose data should be
processed with the data of subsequent digital input and/or output modules in
a 16-bit structure in the input and output data area. Up to 14 bits of input
and output information can be allocated with the processed data of the
submodule types described below.
Submodule types that allocate no data
If data volumes larger than actually required to represent the physical channels are
always used for digital I/O modules, data processing is very inefficient as data
without any actual information also has to be transmitted.
For subsequent use of additional allocated areas, submodule types are available
that occupy this process data and allocate no data area themselves.
The name of these submodule types contains the "-" character plus the quantity of
information used by the submodule.
Example:
The "4DE (-4 BIT I)" submodule type allocates no new data area and is
suitable for a module with 4 digital inputs, whose data should be assigned
an input data area previously allocated.
You can efficiently "package" the process data of digital inputs/outputs by using
both allocating and non-allocating submodule types.
More information on the module and submodule types!
The appendix contains a list of module types with possible submodule types and
assignment of the respective I/O modules with information about data values in
the chapter "Module and Submodule Types of the I/O Modules".
