WAGO 750-306 Technical Description page 75

Fig. 3-29: Memory areas and data exchange for a fieldbus Controller
In its memory space word 0 ... 255, the Controller process image contains the
physical data of the bus modules.
1 The data of the input modules can be read by the CPU and from the field-
2
Note
A concurrent writing on an output must be avoided.
Either by using instance 11 of the static assembly (see chapter 0 "
Additional Assembly Instances 10 and 11") or by using the dynamic assembly
(see chapter 3.2.7.4 "Dynamic Assembly").
The PFC variables are filled in the memory space word 256 ... 511 of the pro-
cess image.
3 The PFC input variables are written in the input memory space from the
4 The variables processed by the CPU via the IEC 61131-3 program are filled
WAGO-I/O-SYSTEM 750
DeviceNet
bus side.
In the same manner, writing to the output modules is possible from the
CPU and from the fieldbus side. The value of the last is written to the out-
put while concurrent writing on an output.
fieldbus side and read by the CPU for further processing.
in the output memory space and can be read out by the master.
Feldbus-Koppler/-Controller • 75
Fieldbus Controller 750-806
g012434d