Siemens SIMATIC S7-400 Reference Manual page 120

Technical Specifications
Communication Functions
Programming device/OP
communication
Number of connectable
OPs
Number of connection
resources for S7
connections via all
interfaces and CPs
Global data communication Yes
•
Number of GD circuits
•
Number of GD
packages
– Sender
– Receiver
•
Size of GD packages
– Of which consistent 1 variable
S7 basic communication
•
User data per job
– Of which consistent 16 bytes
S7 communication
•
User data per job
– Of which consistent 1 variable (462 bytes)
S5-compatible
communication
•
User data per job
– Of which consistent 240 bytes
Standard communication
(FMS)
Interfaces
1st Interface
Type of interface
Physical
Isolated
Power supply to interface
(15 VDC to 30 VDC)
Number of connection
resources
Functionality
•
MPI
•
PROFIBUS DP
4-4
Yes
16 without message
processing, 8 with message
processing
16, with each of them
reserved for PG and
OPrespectively
Max. 8
Max. 8
Max. 16
Max. 64 bytes
Yes
Max. 76 bytes
Yes
Max. 64 Kbytes
Yes (via CP – max. 10 –
and FC AG_SEND and
AG_RECV)
Max. 8 Kbytes
Yes (via CP and loadable
FB)
Integrated
RS 485/Profibus
Yes
Max. 150 mA
MPI: 16
DP: 16
Yes
DP master/DP slave
MPI
•
Utilities
– Programming Yes
device/OP
communication
– Routing Yes
– Global data Yes
communication
– S7 basic Yes
communication
– S7 communication Yes
•
Transmission rates Up to 12 Mbps
DP Master
•
Utilities
– Programming Yes
device/OP
communication
– Routing Yes
– Constant bus cycle Yes
time
– SYNC/FREEZE Yes
– Enable/disable DP Yes
slaves
•
Transmission rates Up to 12 Mbps
•
Number of DP slaves Max. 32
•
Address area Max. 2 Kbytes inputs/2
Kbytes outputs
•
User data per DP slave Maximum 244 bytes E,
maximum 244 bytes A,
distributed over 244 slots
each with 128 bytes
DP slave
•
Utilities
– Monitor/modify Yes, if the interface is active
– Programming Yes, if the interface is active
Yes, if the interface is active
– Routing
•
DDB (GSD) file http://www.ad.siemens.de/c
si_e/gsd
•
Transmission rate Up to 12 Mbps
•
Intermediate memory 244 bytes inputs/
244 bytes outputs
– Address areas Max. 32
– User data per Max. 32 bytes
address area
32 bytes
– Of which consistent
Automation System S7-400 CPU Specifications
A5E00165965-01