Glossary-1
Equipment
Manual OP7, OP17
Release 04/99
Glossary
A
Draws
attention to particularly ur
gent operating states; alarm messages have
to be acknowledged for this reason.
Required for enabling data transfer between the OP and the PLC. It contains
details of the location and size of data areas in the PLC.
The time at which a message is initiated by the PLC or OP
.
C
Definition of system-specific basic settings, messages and screens using
ProT
ool configuration software.
D
The time at which a message is withdrawn by the Programmable Logic PLC
Function resulting in the contents of the display being changed – for exam
-
ple, ”Display message level”, ”Display alarm buf
fer” and ”Display screen”.
Operating mode of the OP in which data are transferred from the Program
-
ming Unit to the OP
.
T
ime between the arrival of an event message and its departure.
Alarm
message
Area pointer
Arrival of a
message
Configuration
Departure of a
message
Display function
Download mode
Duration of display
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