Siemens SINUMERIK 840Di Function Manual page 917

PBC (programmable block
communication)
Consistent data to standard
slave via SFC 14, 15
1) Notice: The inputs/outputs above 4096 are reserved for integrated drives.
2) Subrack 0 is integrated in the NC. Subracks 1 to 3 are available for I/O devices.
I/O expansion
PLC CPU
MLFB
I/O modules
PROFIBUS DP modules
Interfaces (MPI)
Note
Number of PROFIBUS slaves
Since the SDB 2000 and other SDBs must be stored by the PLC operating system in the
static RAM, which can also be accessed by the PROFIBUS ASIC, SDBs smaller than 32
Kbytes may be rejected when the configuration is loaded. It cannot be determined whether
the configuration is legal until the SDB container has been loaded to the CPU. As a result,
the values specified in the above tables should only be seen as guide values.
If the configuration is illegal, a general reset request is issued when the SDBs are loaded.
The cause of the configuring error can be found in the diagnostic buffer on completion of the
general reset.
PLC versions
In SW 3.5 and higher on the 840D, version 6 (version code 35.06.03) is installed with
PLC 314 and version 3 (version code 35.03.03) with PLC 315-2DP or higher.
These versions are compatible with the corresponding SIMATIC CPU300.
All modules and software packages approved by SIMATIC for these versions and CPUs are
therefore suitable. Modules that can only be installed in subrack 0 are the exception
(modules FM NC and FM 357 are also exceptions).
Power Line Basic PLC Program (P3)
Function Manual, 08/2005 Edition, 6FC5397-0BP10-0BA0
840Di
Yes
128
840Di
Integrated PLC 317-2DP
master/slave
6FC5 317-2AJ10-0AB0
PROFIBUS only
1 (2)
1 (0)
2.1 Key PLC CPU data for 810D, 840D and 840Di
Detailed description
840D
Yes
128
840D
Integrated PLC 317-2DP
master/slave
6FC5 317-2AJ10-1AB0
24
1
1
2-5