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
8–2 © Siemens AG 1992 All Rights Reserved 6FC5197- AA50
SINUMERIK 840C (IA)