Siemens SINUMERIK 808D ADVANCED

Commissioning Manual
01/2017
457
Note
The programming engineer (NCK and PLC) is responsible for organizing (structuring) this
memory area. Every storage
position in the memory can be addressed provided that the limit is selected according to the appropriate data format (i.e. a
'DWORD' for a 4byte limit, a WORD for a 2byte limit, etc.). The memory area is always accessed with the
information about
the data type and the position offset within the memory area. The PLC variables can be read or written in the NC program
$A_DBB[n] ("n" stands for the position offset in bytes).
17.13
Axis actual values and distance-to-go
DB5700 ...
5704
Signals from axis/spindle [r]
NCK -> PLC interface
Byte
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
Axis actual value (REAL)
4
Axis distance-to-go (REAL)
Note
The axis actual values a
nd distances-to-go can be separately requested:
•
DB2600.DBX0001.1 Request axis actual values
•
DB2600.DBX0001.2 Request axis distances-to-go
If the particular request is set, then the NCK supplies these values for all axes.
17.14
Maintenance scheduler: User interface
17.14.1
Initial (start) data
DB9903
Initial data table [r16]
Byte
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
Interval 1 [h]
2
Time of first warning 1 [h]
4
Number of warnings to be output 1
6
Reserved 1
8
Interval 2 [h]
10
Time of first warning 2 [h]
11
Number of warnings to be output 2
14 Reserved 2
...
...
248 Interval 32 [h]
250
Time of first warning 32 [h]
252
Number of warnings to be output 32
254
Reserved 32
17.14.2
Actual data
DB9904
Actual data table [r16]
Byte
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
Interval 1 [h]
2
Number of warnings to be output 1
4
Reserved_1 1
6
Reserved_2 1
8
Interval 2 [h]