Siemens SINUMERIK 840C Installation Instructions Manual page 62

3 PLC Installation
3.5.4 PLC status
INPUT:
RECALL:
S
Example of operation
S
S
1) Actuation of the DD softkey selects data words from DB10 and DB11, e.g. DW5 in DB10 and in DB11.
3-12
Enter new value for the selected word or bit
Return to preceding display
Reading input, output and flag words
Softkey: IW, QW, FW
Keys +
Reading data words
Softkey DB to select a DB
Softkey DX to select a DX
Preselect DB (DX) with
Preselect data word with DB
Preselect data words from two contiguous DBs (DXs) with DD
Example:
Selecting DW 5 in DB 10
PLC Status softkey
DW softkey
Keys +
Softkey DW 1)
Keys +
Reading the contents of timers and counters
Softkey: T or C
Keys +
The time is always displayed in seconds, regardless of how it was program-
med in STEP 5. The count is displayed in BCD code.
Display formats
KM: Binary numbers
KH: Hexadecimal numbers
KF: Fixed-point numbers
KT: Time numbers
KZ: Count numbers
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Preselect word
+
number 14
+ to select DB 10
to preselect word no. 5
Preselect timer or counter number 6
0 and 1
0 to F
0 to 9
0.01 to 999
0 to 999
SINUMERIK 840C (IA)
09.95