Siemens SINUMERIK 810D - Page 1334

Detailed description
2.7 Structure and functions of the basic program
Basic logic functions: PLC basic program solution line (P3 sl)
60 Function Manual, 11/2006, 6FC5397-0BP10-2BA0
The readin disable in the channel is reset once the user has reset all the bits output by this
channel and thus acknowledged them.
The output of an M function decoded in the list as a highspeed auxiliary function does not
result in a readin disable.
The figure below shows the structure of the M decoding according to list:
10 
10 
)&<
)&;
'%
'%
'%
'%
ฺ
ฺ
8VHUSURJUDP
5HDGLQGLVDEOH
5HDGLQGLVDEOH
6LJQDOOLVW
'HFRGLQJOLVW
6WDWXVFRQWURO
VLJQDOV
3URFHVVLQJ
0GHFRGLQJDFF
WROLVW
3/&EDVLFSURJUDP
5HDGLQ
GLVDEOH
5HDGLQ
GLVDEOH
6LJQDOVWR1&
1&SDUWSURJUDP
&KDQQHO
1&SDUWSURJUDP
&KDQQHO
Figure 2-14 M decoding acc. to list
Activation of the function
The number of groups to be evaluated/decoded is indicated in the basic program parameter
"ListMDecGrp" when FB 1 is called in OB 100 (see also FB 1 description). M decoding is
activated if this value is between 1 and 16. Before the function is activated, the decoding list
DB75 must be transferred to the PLC followed by a restart.