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WAGO-I/O-SYSTEM 750
CoDeSys 2.3 Runtime Environment
97
758-874/000-131 WAGO-I/O-IPC-C6
Manual
Version 1.0.0
Table 50: Addressing example
I/O Module
Input Data
Output Data
Description
Type
C* FC3,
FC4
FC1,
FC2
FC6
FC5
750-600
End module
The passive 750-600 End Module does not
transmit any data.
Analog input/output modules
Digital input/output modules
*C: Number of the input/output
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11
CoDeSys 2.3 Runtime Environment
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11.1
Process Images
A process image is a memory area in which the process data is stored in a defined
sequence. The process image consists of the I/O modules attached to the internal
bus, the PFC variables, the bit memory address area and the slaves attached to the
fieldbus.
Access to the process images is different with MODBUS and CoDeSys. For
information about access to the process data of the I/O modules connected to the
I/O-IPC and slaves, please see sections “Accessing the Process Image via
MODBUS/TCP Functions” and “Access to the Process Images of the Input and
Output Data via CoDeSys 2.3”.
11.1.1
Process Image for the I/O Modules Connected to the I/O-
IPC
After the I/O-IPC is started up, it automatically detects all connected I/O modules.
The I/O-IPC generates a process image from this, which is divided into an input
data and output data area with a maximum of 500 bytes.
The analog input and output data is stored first word by word in the process
image. Next, the bits of the digital input and output data are combined into words
and stored behind the analog data in the process image.
Data width of an I/O module
The data width of an I/O module is between 0 and 48 bytes. For detailed
information about the respective process data width of individual I/O modules,
see section "Process Data Architecture for MODBUS/TCP".