Siemens SIMATIC S7-400H - Page 303

Single Operation
B-3
Automation System S7-400H Fault-tolerant Systems
A5E00068197-07
Table B-1 Differences between S7-400 and S7-400H, continued
Function H-CPU
redundantsystem
mode
H-CPU in single
operation
Standard S7-400 CPU
Specify the rack number
and the CPU in the OB start
information
No Yes Yes
SSL ID W#16#0019 (status
of all LEDs)
No data records for the
fault tolerant-specific
LEDs
Data records for all
LEDs
Data records for all
LEDs
SSL ID W#16#0222 (data
record for the specified
interrupt)
No data record for the
redundancy error OBs
(OB70, OB72)
Data records for all
interrupt OBs
Data records for all
interrupt OBs
SSL ID W#16#0232 index
W#16#0004 byte 0 of the
word “index” in the data
W#16#00 W#16#F8 Single mode: W#16#F
8
or W#16#F9
Redundant:
word “index” in the data
record
Redundant:
W#16#F8 and
W#16#F1 or
W#16#F1 or
W#16#F9 and
W#16#F0
SSL ID W#16#xy71
fault-tolerant CPU group
information
No Yes Yes
SSL ID W#16#0174 (status
of a module LED)
No data record for the
fault tolerant-specific
LEDs
Data records for all
LEDs
Data records for all
LEDs
Specify the rack number
and the CPU in diagnostics
buffer entries
No Yes Yes
Multi-DP master mode Yes Yes No
Direct communication
between DP slaves
Yes No No
Equidistance of DP slaves Yes No No
Groups of DP slaves
synchronize with SFC11
“DPSYC_FR”
Yes No No
Global data communication Yes No: neither cyclically,
nor by means of
SFC60 “GD_SND” and
SFC61 “GD_RCV”
No: neither cyclically,
nor by means of
SFC60 “GD_SND” and
SFC61 “GD_RCV”
S7 basic communication Yes No No
SFC90 “H_CTRL” No Yes Yes
Central use of FMs
Yes
Yes
No
Central use of FMs
Yes
Yes
No
Operator panel can be
operated on the MPI
Yes Yes Yes
Operator panel can be
operated on the
Yes Yes No
operated on the
PROFIBUS-DP