Technical Specifications
13-3
Automation System S7-400H Fault-tolerant Systems
A5E00068197-07
Configuration
Central racks/expansion
units
Max. 1/21
Multicomputing No
Number of plug-in IMs
(overall)
Max. 6
• IM 460 Max. 6
• IM 463-2 maximum 4, only in single
operation
Number of DP masters
• Integrated 2
• Via CP Max. 10
Operable function modules
and communication
processors
• FM, see Appendix E Limited by the number of
slots and the number of
connections
• CP 441 Limited by the number of
connections (maximum of
30)
• Profibus and Ethernet
CPs including CP
443-5 Extended
Max. 14
Time
Clock Yes
• Buffered Yes
• Resolution 1 ms
• Accuracy at
– Power off Deviation per day 1.7 s
– Power on Deviation per day 8.6 s
Runtime meter 8
• Number 0 to 7
• Value Range 0 to 32767 hours
• Granularity 1 hour
• Retentive Yes
Time synchronization Yes
• In PLC, on MPI and DP as master or slave
Time of day difference in
the system for
synchronization via
• ETHERNET maximum 10 ms
• MPI maximum 200 ms
S7 Message Functions
Number of stations that can
log on for message
functions (e.g. WIN CC or
SIMATIC OP)
Max. 8
• Simultaneously active
ALARM-S/SQ blocks
and ALARM-D/DQ
blocks
Max. 100
ALARM-8 blocks Yes
• Number of
communication jobs for
ALARM-8 blocks and
blocks for S7
communication (can be
set)
Max. 600
• Preset 300
Statuses Yes
Number of archives that
can log on simultaneously
(SFB 37 AR_SEND)
16
Test and Startup Functions
Monitor/modify tag Yes
• Variables Inputs/outputs, memory
markers, DB, distributed
inputs/outputs, timers,
counters
• Number of variables Max. 70
Force Yes
• Variables Inputs/outputs, memory
markers, distributed
inputs/outputs
• Number of variables Max. 256
Status block Yes
Single sequence Yes
Diagnostics buffer Yes
• Number of entries Max. 3200 (can be set)
• Preset 120
Number of breakpoints 4
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