Technical data
20.4 Technical specifications of the CPU 417–5H PN/DP; (6ES7 417-5HK06–0AB0)
S7-400H
420 System Manual, 03/2012, A5E00267695-11
Data areas and their retentivity
Total retentive data area (incl. bit memories,
timers, counters)
Total work and load memory (with backup
battery)
Bit memory 16 KB
Retentivity, configurable
From MB 0 to MB 16383
Preset retentivity
From MB 0 to MB 15
Clock memories 8 (1 bit memory byte)
Data blocks Maximum 16000 (DB 0 reserved)
Number range 1 to 16000
Size
Maximum 64 KB
Local data (configurable) Maximum 64 KB
Default
32 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, 14, 15, 16, 17
Number of time-delay interrupt OBs OB 20, 21, 22, 23
Number of cyclic interrupts OB 30, 31, 32, 33, 34, 35, 36, 37, 38
Number of process interrupt OBs OB 40, 41, 42, 43, 44, 45, 46, 47
Number of DPV1 interrupt OBs OB 55, 56, 57
Number of asynchronous error OBs OB 80, 81, 82, 83, 84, 85, 86, 87, 88
Number of background OBs OB 90
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
2
SDBs Maximum 512
FBs Maximum 8000
Number range 0 - 7999
Size
Maximum 64 KB
FCs Maximum 8000
Number range 0 - 7999
Size
Maximum 64 KB
SDBs Maximum 2048
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