Siemens simatic hmi op7 Equipment Manual page 63

Operation
Equipment Manual OP7, OP17
Release 04/99
To inhibit an alarm message, press the following keys
simultaneously
The OP acknowledges inhibition of the alarm message by means of system
message $ 335. After that, this message will not be displayed until the next
time the OP starts up.
Inhibited alarm messages are no longer inserted into the alarm buffer from
the time of inhibition, either. They are stored in the alarm buffer only from
the time they first occur until such time as the display is inhibited.
Note
The alarm message inhibit function should be used only during the commis-
sioning phase of the OP.
ESC
ACK
7-5