Configuring the AS-Interface safety monitor
4.3 Creating and changing a configuration
ASIMON V3 - Configuration software for AS-Interface safety monitor
76 Programming and Operating Manual, Edition 09/2008, GWA 4NEB 333 1558 02 DS 02
4.3.2 Logic devices
In more complex safety tasks, the various input signals and intermediate states must be linked
– something not possible with the global AND. Logic devices are available for this purpose:
• Logical AND operation
• Logical OR operation
• R/S FlipFlop with SET and HOLD input
• Switch-on delay
• Switch-off delay
• Pulse on positive edge
Example 1:
Figure 4-4 Logic device example
In the example shown here, the OR logic device switches to the ON state (switched on) when
the active optoelectronic protective device "LG1" is in the ON state (switched on) or the safe
switching output of the second OSSD is activated (relay triggered) or both conditions are true.
Note
You can also link monitoring devices from the other OSSD by assigning them to a logic device.
For AS-Interface safety monitors of types 1and 2 with "Basic" function range, the only possible
logic device available for the linking of two monitoring or system devices is the logic OR func-
tion.