2nd Interface
Type of interface
Physical
Isolated
Power supply to interface
(15 VDC to 30 VDC)
Number of connection
resources
Functionality
•
PROFIBUS DP
DP Master
•
Utilities
–
Programming
device/OP
communication
–
Routing
–
Equidistance
–
SYNC/FREEZE
–
Enable/disable DP
slaves
•
Transmission rates
•
Number of DP slaves
•
Address area
•
User data per DP slave
DP slave
Technical specifications as for the 1st 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
Integrated
RS 485/Profibus
Yes
Max. 150 mA
16
DP master/DP slave
Yes
Yes
Yes
Yes
Yes
Up to 12 Mbps
Max. 64
Max. 4 Kbytes inputs /
4 Kbytes outputs
Max. 244 bytes inputs /
244 bytes outputs
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 / 100 +
number of slaves < 11
Yes
5 ms
2.5 ms without use of SFC
126, 127
25×290×219
1
approx. 0.72 kg
Typ. 1.5 A
Max. 1.6 A
Total current consumption
of the components
connected to the MPI/DP
interfaces, with a maximum
of 150 mA per interface
Typ. 40 mA
Max. 320 mA
approx 356 days
5 VDC to 15 VDC
Typ. 7.5 W
4-9