Input Of Values; Calling The Operator Note - Siemens SIMATIC TP 270 Operating Instructions Manual

9.1.3.3

Input of values

Selection
When you select an object, the content entire field is highlighted by a color change. After
pressing any key (except the cursor key), the functions immediately deletes the field content
and displays the new entry.
To move the cursor to any position in the selected box, press the key
cursor key. The selection of the field content is cancelled.
Note
To enter the hexadecimal characters "A" to "F", toggle the input keys using
the letter assignment.
Numeric I/O boxes may be assigned limit values. In this case, the system accepts only the
values which lie within the configured range. The system rejects any values which are
outside these limits and restores the original value. In this case, the HMI device outputs a
system alarm.
9.1.3.4

Calling the operator note

Purpose
The operator notes provide the programmer with additional information and operating
instruction relating to alarms, screen and operable screen objects. An operator note may
contain information about the permissible range of values for an I/O field (refer to figure
below) or, in the case of an alarm, information on the causes of an alarm event and its
elimination.
Figure 9-6
TP 270, OP 270, MP 270B (WinCC flexible)
Operating Instructions, Edition 03/2004, 6AV6691-1DD01-0AB0
Operator note for an I/O field (Example)
Operate project
9.1 Basic principles of operation
plus the relevant
SHIFT
to activate
A-Z
9-15