Siemens SINUMERIK 840C Installation Instructions Manual page 608

8 PLC Machine Data (PLC MD)
8.5 PLC MD for the operating system (system bits)
PLC MD
DB63
DW No.
6030
DL 15
Default value:
0 signal:
1 signal:
Example:
0 0 0
Only the error bits in the active channel DBs (DB10, DB11) for channels 1 and 2 are
evaluated.
0 0 0
The error bits in the inactive channel DBs (DB12, DB13) for channels 3 and 4 are also
evaluated.
Note:
If an error bit is set in an inactive channel DB that is used for the extended display of error and
operational messages, then the corresponding errors are not included in the message group
displays.
You are not permitted to assign PLC channels (MD 6000) while the display of error and
operational messages for unused channels (MD 6030) is active, as it would result in
corruption and falsification of the displays. Also refer to the PLC Installation Section.
Example:
_______
1) No longer exists from SW 4 onwards, new alarm concept
8–16
More user manuals on
7 6 5
All bits default to 0
Corresponding inactive channel DB is not used to activate error/operational
messages.
The inactive channel DB is used to activate error/operational messages.
0 0 0 1 1 PLC MD 6000
0 1 1 0 0 PLC MD 6030
MD 6000.0 = 1 and
MD 6030.0 = 1
ManualsBase.com
Bit No.
4 3 2
Error/operational messages
on inactive channels
4 3
© Siemens AG 1992 All Rights Reserved
09.95
1 0
1)
2 1
6FC5197- AA50
SINUMERIK 840C (IA)