Siemens SIMATIC S7-400H System Manual page 306

Technical data
17.3 Technical specifications of the CPU 417–4H; (6ES7 417–4HT14–0AB0)
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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2. Interface
Type of interface
Physical properties
Isolated
Interface power supply (15 V DC to 30 V DC)
Number of connection resources
Functionality
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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.
PROFIBUS DP
Yes
Yes
Yes
No
No
No
No
No
No
Max. 12 Mbps
Max. 32
Maximum 2 KB inputs / 2 KB outputs
Maximum 244 bytes
Maximum 244 bytes inputs,
Maximum 244 bytes outputs,
Maximum 244 slots
Maximum 128 bytes per slot
Integrated
RS 485/Profibus
Yes
Max. 150 mA
32,
a diagnostic repeater in the chain reduces the
number of connection resources by 1
DP master
System Manual, 09/2007, A5E00267695-03
S7-400H