Siemens OP17, Руководство по эксплуатации оборудования

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1-3
Equipment Manual OP7, OP17
Release 04/99
1.2 Visualizing and controlling processes
The basic functions of an OP consist in displaying process states and in con-
trolling the process. The following display and control functions can be con-
figured on Operator Panels OP7 and OP17:
screens
event messages
alarm messages
recipes
help text
logging
languages
schedulers for the OP17
Data supplied by the PLC may be displayed together on a screen and modi-
fied individually, if required. A screen consists of several screen entries
since, for example, more related data are required for describing a machine
state than can normally be displayed in the window of a screen. Therefore
data on operating temperature, fill level, speed and running time can illus-
trate the current machine state.
The OP7 and OP17 are Operator Panels with text based displays. Accordin-
gly, a screen on the display comprises text items which may include static
text and current state values.
Screens may be combined on the OP in a directory. You can use the directory
to display, print and edit screens.
Event messages are information and operating notes on current machine and
process states during regular production operations. Event messages may
contain process values. Process values are displayed either numerically - for
example,
Motor running at 3000 revs
or symbolically - for example,
Motor running normally
,
where a specific control value is assigned to
normally
.
The classification of a message as an event message is done at the configura-
tion stage.
Display and
control functions
Screens
Event messages