Technical data of CPU 31xC
6.2 CPU 312C
CPU 31xC and CPU 31x, Technical Data
6-4 Manual, 01/2006 Edition, A5E00105475-06
Technical data
Data areas and their retentivity
Flag bits 128 bytes
• Retentive address areas
Configurable
• Default retentivity
MB0 to MB15
Clock flag bits 8 (1 byte per flag bit)
Data blocks Max. 511
(in the 1 to 511 range of numbers)
• Size
Max. 16 KB
Local data per priority class Max. 256 bytes
Blocks
Total 1024 (DBs, FCs, FBs)
The maximum number of blocks that can be
loaded may be reduced if you are using another
MMC.
OBs see the Instruction List
• Size
Max. 16 KB
Nesting depth
• Per priority class
8
• additional within an error OB
4
FBs
• Number, Max.
1024
(in the 0 to 2047 range of numbers)
• Size
Max. 16 KB
FCs
• Number, Max.
1024
(in the 0 to 2047 range of numbers)
• Size
Max. 16 KB
Address areas (I/O)
Total I/O address area Max. 1024 bytes/1024 bytes
(can be freely addressed)
I/O process image 128 bytes/128 bytes
Digital channels Max. 256
• Of those central
Max. 256
• Integrated channels
10 DI / 6 DO
Analog channels Max. 64
• Of those central
Max. 64
• Integrated channels
None
Assembly
Racks Max. 1
Modules per rack Max. 8
Number of DP masters
• Integrated
None
• Via CP
4
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