108 I/O Modules
WAGO-I/O-SYSTEM 750
750-325 CC-Link Fieldbus Coupler
Manual
Version 2.0.1
10.2 Process Data Configuration for CC-Link
For some I/O modules (and their variants), the architecture of the process data
depends on the fieldbus.
The process image is word-oriented and byte-aligned for CC-Link.
When word-oriented, data from an I/O module always begins on a word
boundary.
If the data from an I/O module is composed of various data types, the byte
alignment may prevent data from being in a word that corresponds to its data
type. In this case, empty bytes can also be used to display data corresponding to
its data type in a word
In the following “
Type 1
” to “
Type 64
” sections, the information regarding byte
and bit positions in the process images of the I/O modules is to be observed.
Equipment damage due to incorrect address!
To prevent any damage to the device in the field, you must always take the
process data for all previous byte or bit-oriented I/O modules into account when
addressing an I/O module at any position in the fieldbus node.
Process image is first structured with analog then digital data!
With any fieldbus node configuration, please note that the data of all analog input
and output modules of the series are mapped in the input and output process
image. The data of the digital input and output modules is then attached after the
analog input and output data, always byte by byte, in the respective process
image.
10.2.1 Explanation of the Process Data Representations
The following sections describe the representation for WAGO-I/O SYSTEM 750
and 753 Series I/O modules in the process image of the MODBUS RTU fieldbus
coupler/controller, as well as the configuration of the process values.
The first section “
Mapping Types by Item Number
” contains an overview of all
available 750 Series I/O modules with fixed connector listed by item number.
Item numbers followed by a hashtag “#” and number denote an I/O module
parameterization to a specific operating mode or file size.
