System Events; Enabling/Disabling System Events; Figure 56: Enabling/Disabling System Events - WAGO -I/O-SYSTEM 750 Manual

WAGO-I/O-SYSTEM 750
750-882 Media Redundancy ETHERNET Controller
9.5

System Events

In place of a task, a system event can also call up a project module for
processing.
The system events to be employed for this depend on the target system. These
events consist of the list of supported standard system events for the control
system and any other manufacturer-specific events which may have been added.
Possible events, for example: Stop, Start, Online change.
A complete list of all system events is provided at WAGO-I/O-PRO in tab
Resources > Task configuration > System events.
9.5.1

Enabling/Disabling System Events

1. Open the register resources > task configuration > system events in
WAGO-I/O-PRO (see the following Figure).
2. In order to call up a module via an event, activate the entries by setting a
hatch mark in the respective control boxes.
3. Disable the control boxes by removing the hatch marks through a mouse
click.

Figure 56: Enabling/Disabling System Events

Only use global variables and functions (Fun)!
Note that the fetch of function blocks (FB) such as Timer modules , or the fetch of
blocking functions such as file operations can lead to a malfunction of the
system. Therefore use in system events exclusively Global variables and
functions (Fun).
Programming the PFC Using WAGO-I/O-PRO 141
Manual
1.5.0