Siemens SIMATIC S7-400 Reference Manual page 141

•
Number of DP slaves
•
Address area
•
User data per DP slave
DP slave
As for the 1st interface
3rd Interface
Type of interface
Insertable interface
submodule
Technical features as for the 2nd interface
Programming
Programming language
Instruction set
Bracket levels
System functions (SFC)
Number of SFCs active at
the same time
•
WR_REC
•
WR_PARM
•
PARM_MOD
•
WR_DPARM
•
DPNRM_DG
•
RDSYSST
•
DP_TOPOL
CPU as DP Slave
You can only configure the CPU once as a DP slave even if the CPU has several
interfaces.
Automation System S7-400 CPU Specifications
A5E00165965-01
Max. 125
Max. 8 Kbytes inputs/ 8
Kbytes outputs
In accordance with the DP
slave, but a maximum of
128 bytes of
inputs/128 bytes of outputs
Plug-in interface submodule
IF-964-DP
LAD, FBD, STL, SCL
See instruction list
8
See instruction list
8
8
1
2
8
1 to 8
1
Technical Specifications
System function blocks
(SFB)
Number of SFBs active at
the same time
•
RD_REC
•
WR_REC
User program protection
Access to consistent data
in the process image
CiR synchronization time
Base load
Time per I/O byte
Clock synchronism
User data per clock
synchronous slave
Maximum number of bytes
and slaves in a process
image partition
Equidistance
Shortest clock pulse
Dimensions
Mounting dimensions
W×H×D (mm)
Slots required
Weight
Voltages, Currents
Current consumption from
S7-400 bus (5 VDC)
Current consumption from
the S7-400 bus (24 VDC)
The CPU does not
consume any current at 24
V, and it only makes this
voltage available at the
MPI/DP interface.
Backup current
maximum backup time
Incoming supply of external
backup voltage to the CPU
Power loss
See instruction list
8
8
Password protection
Yes
100 ms
120 µs
Max. 128 bytes
The following applies:
Number of bytes / 50 +
number of slaves < 26
Yes
5 ms
2.5 ms without use of SFC
126, 127
50×290×219
2
approx. 1.07 kg
Typ. 1.6 A
Max. 1.8 A
Total current consumption
of the components
connected to the MPI/DP
interfaces, with a maximum
of 150 mA per interface
Typ. 50 mA
Max. 460 mA
approx 332 days
5 VDC to 15 VDC
Typ. 8 W
4-25