Siemens SINUMERIK Series

A4: Digital and analog NCK I/Os for SINUMERIK 840D sl
1.3 Access via PROFIBUS
Extended Functions
Function Manual, 03/2013, 6FC5397-1BP40-3BA1
57
Further attributes
Further attributes can be allocated to each I/O range with the following machine data:
MD10502 $MN_DPIO_RANGE_ATTRIBUTE_IN[<n>]
Bit Value Meaning
0 Format display of system variables $A_DPx_IN[<n>,<m>]
0 Little-endian format
1 Big-endian format
1 Reserved
2 Reading of input data
0 Reading possible via system variables and CC-binding
1 Reading possible only for CC-binding
3 Output of slot sign-of-life alarms
0 Slot sign-of-life alarms are issued
1 Slot sign-of-life alarms are suppressed
MD10512 $MN_DPIO_RANGE_ATTRIBUTE_OUT[<n>]
Bit Value Meaning
0 Format display of system variables $A_DPx_OUT[<n>,<m>]
0 Little-endian format
1 Big-endian format
1 Writing of output data
0 Writing only via system variable
1 Writing only via CC-binding
2 Reserved
3 Output of slot sign-of-life alarms
0 Slot sign-of-life alarms are issued
1 Slot sign-of-life alarms are suppressed
Note
● The configuration of the I/O ranges via the corresponding machine data need not be done
persistently. That is, the assignment of the I/O ranges to the corresponding machine
data-indices can be selected in any way.
● If the registration of one/several I/O range(s) does not run successfully during the NCK
run-up phase, the registration is aborted with an alarm (4700 or 4702).