Siemens SINUMERIK Series Function Manual page 30

A4: Digital and analog NCK I/Os for SINUMERIK 840D sl
1.2 Access via PLC
Weighting factor for the analog NCK I/Os
The weighting factor can be used to adapt each individual NCK I/O to the AD or DA
converter of the analog I/O module used:
• MD10320 $MN_FASTIO_ANA_INPUT_WEIGHT[<n>]
• MD10330 $MN_FASTIO_ANA_OUTPUT_WEIGHT[<n>] Weighting factor for the analog
Assignment to NC functions
Several NC functions are dependent on the functionality of the NCK I/Os.
The assignment of the NCK I/Os used for these NC functions is performed function-
specifically via machine data, e.g. for the "Multiple feedrates in one block" function via the
machine data:
MD21220 $MC_MULTFEED_ASSIGN_FASTIN
A byte address should be specified in the machine data for digital inputs/outputs. The
assignment is always byte-by-byte.
Byte address
0
1
2
3
4
5
128
129
Note
Multiple assignments
Multiple assignments of inputs are not monitored.
Multiple assignments of outputs are checked during run-up and indicated by an alarm.
30
Assignment for the digital NCK I/Os
None
1 to 4 (on-board I/O)
9
17
25
33
Inputs 1 to 8 of comparator byte 1
Inputs 9 to 16 of comparator byte 2
Weighting factor for the analog
NCK inputs
For further information, see
"NCK analog inputs (Page 37)".
NCK outputs
For further information, see
"NCK analog outputs
(Page 39)".
and 5 to 8 (NCK output without hardware)
to 16 (external NCK I/Os)
to 24 (external NCK I/Os)
to 32 (external NCK I/Os)
to 40 (external NCK I/Os)
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
Extended Functions