Structure Of The Axis Data Block For An Axis - Siemens SIMATIC S5 Manual

6.3.7.2

Structure of the Axis Data Block for an Axis

An axis requires the data words from parameterDWNRtoDWNR+14 inclusive from the axis
data block selected with the parameter DBNR. The same data block can be used for several
axes, the next axis then occupies the area from DWNR +15.
The data block is structured as follows:
Axis 1 Parameter DWNR = n
DW n Parameter BA;
DW n+l Parameter Q-DB;
DW n+2 Parameter QANF; source first data word
DW n+3 Parameter Z-DB;
Parameter ZANF; destination first data word
DW n+4
DW n+5 Parameter SSNR; interface number
DW n+6 binary identifiers
high
DW n+7
—
bits from the SEND block
low
DW n+8
DW n+9 occupied
occupied
DW n+l O
high
DW n+l 1
—
bits from the FETCH block
low
DW n+12
DW n+l 3 occupied
DW n+l 4
There must be a "job field" with the structure above for each axis addressed.
The data words DWn to DWn+5 inclusive must only be completed if the function block is to
have parameters assigned indirectly.
DB type, source data block
Standard Function Block FB165
Recommended
data format
KF
KY
KF
KF
I
KM
KF
KM
KF
KM
KF
KM
KF
I
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