Siemens Simatic S7-400

Technical specifications
10.1 Technical Specification of the CPU 414-3 PN/DP; (6ES7414-3EM05-0AB0)
S7-400 Automation System, CPU Specifications
10-2 Manual, 10/2006, 6ES7498-8AA04-8BA0
CPU and firmware version
S7 timers 2048
• Retentive address areas,
configurable
From T 0 to T 2047
• Preset
No retentive timers
• Timer range
10 ms to 9990 s
IEC timers Yes
• Type
SFB
Data areas and their retentive address areas
Total retentive data areas (including memory bits;
times; counts)
Total working and load memory (with backup
battery)
Bit memory 8 KB
• Retentive address areas,
configurable
From MB 0 to MB 8191
• Preset retentive address areas
MB 0 to MB 15
Clock flag bits 8 (1 flag byte)
Data blocks Max. 6000 (DB 0 reserved)
in the 1 to 16 000 range of numbers
• Size
Max. 64 KB
Local data (can be set) Max. 16 KB
• Preset
8 KB
Blocks
OBs See Instruction List
• Size
Max. 64 KB
Nesting depth
• Per priority class
24
• Additionally within an error OB
1
FBs Max. 3000
in the 1 to 16 000 range of numbers
• Size
Max. 64 KB
FCs Max. 3000
in the 1 to 16 000 range of numbers
• Size
Max. 64 KB
Address areas (I/O)
Total I/O address area 8 KB / 8 KB
including diagnostics addresses for I/O interfaces,
etc.
• Distributed
MPI/DP interface 2 KB / 2 KB
DP interface 6 KB / 6 KB
PN interface 8 KB / 8 KB
Process image 8 KB / 8 KB (can be set)
• Preset
256 bytes / 256 bytes
• Number of process image
partitions
Max. 15