Siemens SINUMERIK 840D Description Of Functions page 146

3 Safety-Related Functions
3.10 Safe programable logic (SPL) (840D SW 4.4.18)
MD 10390: $MN_SAFE_IN_HW_ASSIGN[n] (assigning an input module to the
external SPL inputs $A_INSE[1 ... 64])
MD 10392: $MN_SAFE_OUT_HW_ASSIGN[n] (assigning an output module to
the external SPL outputs $A_OUTSE[1 ... 64])
Overview of MD Table 3-58
for 840D
NCU-local binary The NCU-local binary I/O signals connected at the cable distributor of the NCU
inputs/outputs box (X121 interface) have only been available via the system variables
(SW 6.3.21 and higher) $A_OUT[1...4] and $A_IN[1...4].
Now, both the SPL SGEs/SGAs and the axial SGEs/SGAs have been extended
in the parameterization to allow local NCU connections to be used.
Parameterization of the connections is carried out via the MD
$MN_SAFE_IN/OUT_HW_ASSIGN for SPL SGEs/SGAs and the axial MD
$MA_SAFE_<signal>_INPUT/OUTPUT. Here, a "0" must be entered as
segment data for I/O modules on the 611 digital bus instead of a "1".
Changing machine In MD $MN_SAFE_IN_HW_ASSIGN = i s mm xx nn, the distinction is made in
data the value s (segment number) between parameterization of a system variable
and a hardware terminal.
3-146
SINUMERIK 840D/SIMODRIVE 611 digital SINUMERIK Safety Integrated (FBSI) - Edition 11.03
Overview of machine data for 840D
Number Name
$MN_SAFE_ IN_HW_ASSIGN [ n ]
10390
10392 $MN_SAFE_OUT_HW_ASSIGN [ n ]
11500 $MN_PREVENT_SYNACT_LOCK[m,n]
Note:
Data is described in Chapter 4, "Machine data for SINUMERIK 840D"
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11.03