Accessing the object list

Communication occurs via the I/O area. The most important data from the object list is mapped in the I/O area. The mapping also contains the area where you can access the objects of the function module acyclically. With acyclical access, every access to the object list is acknowledged by the function module. The mapping cannot be changed.

INFORMATION

If you use the acyclical channel to write to objects that are mapped in the I/O area, their values are overwritten with the next cycle. Therefore, data that is mapped in the I/O area should not be written via the acyclical channel!