Siemens SIMATIC S7-400H System Manual page 290

Technical data
17.1 Technical specifications of the CPU 412–3H; (6ES7 412–3HJ14–0AB0)
Functionality
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1. Interface in MPI mode
Services
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1. Interface in DP master mode
Services
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Transmission rates
Number of DP slaves
Address area
User data per DP slave
Note:
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290
MPI
PROFIBUS DP
PG/OP communication
Routing
S7 communication
Global data communication
S7 basic communication
Transmission rates
PG/OP communication
Routing
S7 communication
Global data communication
S7 basic communication
Constant bus cycle time
SYNC/FREEZE
Enable/disable DP slaves
Direct data exchange (slave-to-slave
communication)
The total sum of the input bytes across all slots may not exceed 244.
The total sum of the output bytes across all slots may not exceed 244.
The address range of the interface (maximum 2 KB inputs / 2 KB outputs) must not be exceeded
in total across all 32 slaves.
Yes
DP master
Yes
Yes
Yes
No
No
Max. 12 Mbps
Yes
Yes
Yes
No
No
No
No
No
No
Max. 12 Mbps
Max. 32
Maximum 2 KB inputs / 2 KB outputs
Maximum 244
Maximum 244 bytes inputs
Maximum 244 bytes outputs
Maximum 244 slots
Maximum 128 bytes per slot
System Manual, 09/2007, A5E00267695-03
S7-400H