8 PLC Machine Data (PLC MD) 08.96
8.1.2 Breakdown of the PLC MD
8.1.2 Breakdown of the PLC MD
PLC
MD
DB Description Softkey Section
0
to
839
DB60 MD for operating system System data 8.2
2000
to
2849
DB61 MD for function blocks FB data 8.3
4000
to
4049
DB62 MD for user User data 8.4
6000
to
6599
DB63
MD bits for
operating system
System bits 8.5
7000
to
7799
DB64
MD bits for
function blocks
FB bits 8.6
8000
to
8199
DB65 MD bits for user User bits 8.7
Example:
Data block to which PLC MD
are transferred on a cold
restart. For read.
PLC MD No.
for input, read
Value initialized
when PLC MD are
loaded in "Overall
Reset" mode
Name
2
Default value Lower input limit Upper input limit Units
DB 60
a
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8–2 © Siemens AG 1992 All Rights Reserved 6FC5197- AA50
SINUMERIK 840C (IA)
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