Breakdown Of The Plc Md - Siemens SINUMERIK 840C Installation Instructions Manual

8 PLC Machine Data (PLC MD)

8.1.2 Breakdown of the PLC MD

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