Siemens SINUMERIK 840D sl Function Manual page 234

Connecting sensors and actuators
8.4 Safety-related CPU-CPU communication (F_DP communication)
The following parameterizing data sets are obtained:
1. SPL connection (sub-slot 1)$MN_SAFE_RDP_ID[0] = 1000
$MN_SAFE_RDP_NAME[0] = WZM1
$MN_SAFE_RDP_CONNECTION_NR[0] = 1
$MN_SAFE_RDP_LADDR[0] = 298
$MN_SAFE_RDP_TIMEOUT[0] = 0.
MN_SAFE_RDP_ASSIGN[0] = 001 004
$MN_SAFE_RDP_FILTER[0] = 000F
$MN_SAFE_RDP_ERR_REAC[0] = 0
$MN_SAFE_RDP_SUBS[0] = 0
2. SPL connection (sub-slot 2)
$MN_SAFE_RDP_ID[1] = 1000
$MN_SAFE_RDP_NAME[1] = WZM1
$MN_SAFE_RDP_CONNECTION_NR[1] = 1
$MN_SAFE_RDP_LADDR[1] = 298
$MN_SAFE_RDP_TIMEOUT[1] = 0.5
$MN_SAFE_RDP_ASSIGN[1] = 033 036
$MN_SAFE_RDP_FILTER[1] = F000
$MN_SAFE_RDP_ERR_REAC[1] = 0
$MN_SAFE_RDP_SUBS[1] = 0
Note
All machine data of a parameterizing data set are linked with one another using the common
machine data index.
MD13341 $MN_SAFE_RDP_ID: Identifier of the F_DP communication relationship
The identifier must be assigned a freely selectable, unique identifier (DP_DP_ID), however,
this must be unique across all F-CPUs that are connected using F_DP communication.
MD13342 $MN_SAFE_RDP_NAME: Connection name
An SPL connection can be allocated a meaningful name using this machine data. The
connection name can be freely selected and can be a maximum of 15 characters. The
connection name is displayed at the HMI and in the alarm display. If a connection name is
specified, then for Alarms 2735x, the name is displayed. If a connection name is not specified,
then the corresponding identifier is displayed (DP_DP_ID).
The connection name does not have to be specified in all of the parameterizing data sets
associated with an SPL connection. The connection name that is specified in the first active
parameterizing data set is always used, i.e. the parameterizing data set with the lowest
machine data index. All other data sets of an SPL connection are not evaluated with reference
to connection names.
This MD is not incorporated in the checksum calculation; i.e. it can also be changed without
aligning the checksum.
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Function Manual, 12/2017, 6FC5397-4BP40-6BA1
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Safety Integrated