Siemens SIMATIC S7-400H, System Manual

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Technical data
20.1 Technical specification of the CPU 412–5H PN/DP; (6ES7 412-5HK06–0AB0)
S7-400H
384
System Manual, 03/2012, A5E00267695-11
S7 timers 2048

Retentivity, configurable
From T 0 to T 2047

Default
No retentive timers
 Time range
10 ms to 9990 s
IEC timers Yes

Type
SFB
Data areas and their retentivity
Total retentive data area (incl. bit memories,
timers, counters)
Total work and load memory (with backup
battery)
Bit memory 8 KB
 Retentivity, configurable
From MB 0 to MB 8191

Preset retentivity
From MB 0 to MB 15
Clock memories 8 (1 bit memory byte)
Data blocks Maximum 6000 (DB 0 reserved)
Number range 1 - 16000

Size
Maximum 64 KB
Local data (configurable) Maximum 16 KB

Default
8 KB
Blocks
OBs See Instruction List
 Size
Maximum 64 KB
Number of free-cycle OBs OB 1
Number of time-of-day interrupt OBs OB 10, 11, 12, 13
Number of time-delay interrupt OBs OB 20, 21, 22, 23
Number of cyclic interrupts OB 32, 33, 34, 35
Number of process interrupt OBs OB 40, 41, 42, 43
Number of DPV1 interrupt OBs OB 55, 56, 57
Number of redundancy error OBs: OB 70, 72
Number of asynchronous error OBs OB 80, 81, 82, 83, 84, 85, 86, 87, 88
Number of restart OBs OB 100, 102
Number of synchronous error OBs OB 121, 122
Nesting depth

Per priority class
24

Additional ones in an error OB
1
FBs Maximum 3000
Number range 0 - 7999

Size
Maximum 64 KB