Decoding Lists For M Signals (Db 80 - Siemens SINUMERIK 840C Installation Manual

5 PLC Interface
5.3.13 DBs set-up for user (DB 66, 67, 68, 71)
DB 71 for bits
15 14
Byte No.
PLC
7
DL 0
. .
.
DR 15
5.3.14 Decoding lists for M signals (DB 80...DB 83)
DW No.
High byte (DL)
PLC-
MD No.
DW
m+0
DW
m+1
Bit address, DW No.
DW
m+2
Notes:
• Address m is obtained from the following number of the M function definition:
M function
1
2
3
. .
.
64
• The table is to be completed consecutively from the first entry, gaps between entries are
not allowed. If less than 64 M functions are defined, unassigned entries are preset with 0.
All unassigned entries are located at the end of the table.
• The decoding lists are channel-specific, i. e. decoding list DB 80 is provided for NC
channel 1 and, accordingly, DB 83 is allocated to NC channel 4.
• M decoding according to the decoding list is activated channel-specifically via MDs.
_______
1) SW 4 and higher: DB 85
5–62
13 12
Bit No.
6 5 4
Decoding lists for M signals
Extended address
M address
m
0
3
6
. .
.
189
END OF SECTION
© Siemens AG 1992 All Rights Reserved
11 10 9
3 2 1
1)
Low byte (DR)
Bit address, bit No.
6FC5197- AA60
SINUMERIK 840C (IA)
10.94
8
0