Siemens SIMATIC C7-613, Manual

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Operating the C7-613
5-8
C7-613 Control System
A5E00138934-03
Example :
You have specified 5 as the length of the field (Decimals_Length).
You have selected “Byte” as the data type (Access Code).
Display Value in the Byte
Prior to entry 11111 11111111
After entering the value 11110 11110 00011110
Limits
You can specify limits for numerical input fields in the configuration interface. A
limit check is performed in these fields. C7-613 checks the limits when the ENTER
key is pressed after a value is entered or modified. The values entered are
accepted only if they are within the limits. If a value is entered that lies outside
these limits, a corresponding system message is output.
5.3.1 Entry using Function Keys (K-keys)
!
Caution
If you have selected the “entry using function keys” setting, and in addition, you
want to activate functions using the keys, hazardous system states may arise due
to the double assignment of the function keys.
Make absolutely sure in this case that, prior to entering each value with the SHIFT
key, the function keys have been switched to the entry mode. Illumination of the
SHIFT LED indicates entry mode.
Also note that once the entry is acknowledged/cancelled with ENTER/ESC, the
entry mode is automatically terminated (SHIFT LED turns off).
In fields where a value may be entered by the operator, the numerical value is
entered on a character-by-character basis using the function keys (SHIFT Lock).
The entry begins right-justified in the fields. Entered characters are shifted to the
left.
When entering decimal numbers, the “Cursor up/down” keys can be used to set
the
sign .
If the field already contains a value, it is completely removed from the field when
the first character is entered.