Performing Typical Or Routine Operator Tasks - Siemens S7-200 System Manual

Bits Associated Enable Condition
with Alarms and for the Bit
Screens
ALARM The edit
MESSAGE: notification is
EMBEDDED available only
VARIABLE EDIT when the alarm
NOTIFICATION contains a variable
and the user has
enabled the
Wizard option to
allow editing of the
variable. "Operator
is allowed to edit
this data". If the
alarm message
contains multiple
editable variables,
each variable has
a unique edit
notification bit.
USER SCREEN: The edit
EMBEDDED notification is
VARIABLE EDIT available only
NOTIFICATION when the user
screen contains a
variable and the
user has enabled
the Wizard option
to allow editing of
the variable.
"Operator is
allowed to edit this
data".
If the user screen
contains multiple
editable variables,
each variable has
a unique edit
notification bit.
5.6

Performing Typical or Routine Operator Tasks

Performing Typical or Routine Operator Tasks
The Operator Menu allows you to perform the following tasks:
● Determining the model and version of the S7-200 CPU (CPU Status)
● Viewing the error messages generated by the S7-200 CPU (CPU Status)
Text Display (TD) User Manual
System Manual, 08/2008, A5E00765548-03
Results shown on the TD Display
The TD device will write the updated variable
value to the CPU and set the edit notification bit
for that variable when the operator presses the
ENTER key, completing the edit of the variable.
The TD device will write the updated variable
value to the CPU and set the edit notification bit
for that variable when the operator presses the
ENTER key, completing the edit of the variable.
Operating Your Text Display (TD) Device
5.6 Performing Typical or Routine Operator Tasks
Clear Condition for the Bit
The user program can
monitor the edit notification
bit to recognize when an
editable value has been
changed by the operator.
The user program can then
take some action based on
the new value for the
variable.
The user program must clear
the edit notification bit so that
subsequent edits can be
recognized.
The user program can
monitor the edit notification
bit to recognize when an
editable value has been
changed by the operator.
The user program can then
take some action based on
the new value for the
variable.
The user program must clear
the edit notification bit so that
subsequent edits can be
recognized.
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