Plc Status - Siemens SINUMERIK 840C Installation Instructions Manual

09.95
3.5.4
Selection
Data areas
Operator entries in
PLC STATUS mode
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SINUMERIK 840C (IA)
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PLC status

In the "PLC STATUS" mode, the user can read out the contents of counters and
timers and read out and write input words, output words, flag words, data words
and data double words. These words can only be written when a password has
been entered.
S
Up to software version 2:
SK "Diagnosis" –> SK "NC diagnosis" –> SK "Service display" –> SK "PLC
error recognition"
S
Software version 3 and higher:
SK "Diagnosis" –> SK "Service display" –> SK "PLC service"
IW
KM KH
DW
parallel
KH
Input word
Output word
Flag word
Data word
Data double word
Times
Counter
Any existing byte number may be preselected
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QW FW DB
KF KT KC
DD
KF
Read
x
x
x
x
x
x
x
The byte number is incremented by one
The byte number is decremented by one
3 PLC Installation
3.5.4 PLC status
DX C T
Write Data number
x 0–126
x 0–126
x 0–254
x 0–254
x 0–254
– 0–255
– 0–255
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