Siemens Sinumerik 840D sl Function Manual page 246

Connecting Sensors/Actuators
7.4 Safety- -related CPU- -CPU communication (F_DP communication)
S Connection number
A parameterizing data set is assigned to an SPL connection using the connec-
tion number.
An SPL connection is defined in a parameterizing data set. For SINUMERIK 840D
sl, 16 parameterizing data sets are available for F_SENDDP. This means that a
maximum of 16 SPL connections, identified using 16 different identifiers
(DP_DP_ID) can be simultaneously active. In case of an error, Alarm 27306
"F_DP: Max. number of active SPL connections (%1) for %2 exceeded" is output
SPL output data ($A_OUTSE) can only be assigned to an SPL connection in the
parameterizing data of the SPL coupling as contiguous area. If the SPL output
data, which are required for an SPL connection, are not contiguous, but are dis-
tributed over several areas, then several SPL connections must be parameterized.
These SPL connections are designated using identical F_DP communication rela-
tionships and connection numbers, but different SPL couplings. The parameteriza-
tion of one SPL connection with several SPL couplings is designated as sub--slots
within the scope of PROFIsafe (see Chapter 7.2.6 "Parameterizing the SPL--SGE
interface").
The number of SPL couplings per SPL connection can be freely parameterized
within the framework of the number of parameterizing data sets that are available.
The following options are available to parameterize SPL connections and SPL
couplings for each SPL connection:
S SPL connections: 1 up to a maximum of 16
S SPL couplings per SPL connection: 1 up to a maximum of 16, whereby the sum
of all SPL couplings of all SPL connections can be a maximum of 16
For the case that 16 SPL connections are parameterized, for each SPL connec-
tion, there is only one SPL coupling available.
The following value range for system variables and machine data is obtained from
this:
S System variable index: 1...n with n = 16
S Machine data index: 0...m with m = 15
7-246
SINUMERIK 840D sl/SINAMICS S120 SINUMERIK Safety Integrated (FBSI sl) - - 10.2015 Edition
© Siemens AG 2015 All Rights Reserved
10/15