Size of Data on Premium and Atrium PLCs
(Original Document)
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At a Glance
The maximum size of located and unlocated data differs according to the processor.
Size of Located Data
Maximum Size of Located Data according to Processor Type:
Object type
Address
Max/default values for TSX P57 0244/104/154/1634
Max/default values for TSX P57 204/254/2634, TSX PCI 57 204, and TSX H57 24M
Max/default values for TSX P57 304/354/3634 and TSX PCI 57 354
Max/default values for TSX P57 454/4634 and TSX H57 44M
Max/default values for TSX P57 554/5634
Max/default values for TSX P57 6634
Internal bits
%Mi
3692/256
8056/512
16250/512
32634/512
32634/512
32634/512
Input/output bits
%I/Qr.m.c
(1)
(1)
(1)
(1)
(1)
(1)
System bits
%Si
128
128
128
128
128
128
Internal words
%MWi
32464/512
32464/1024
32464/1024
32464/1024
65232/2048
65232/2048
Constant words
%KWi
32760/128
32760/256
32760/256
32760/256
32760/256
32760/256
System words
%SWi
168
168
168
168
168
168
(1) depends on the declared hardware configuration (I/O modules, AS-interface devices).
Size of Unlocated Data
Maximum size of Unlocated Data according to Processor Type:
Object type
Size for TSX P57 0244/104/154/1634
Size for TSX P57 204/2634/254/304/354/3634 and TSX PCI 57 204/354
Size for TSX P57 454/4634/554/5634/6634 and TSX H57 24M/44M
Elementary Data Types (EDTs)
Derived Data Types (DDTs)
Limited to 32 Kilobytes
Limited to 64 Kilobytes
Unlimited (1)
DFB and EFB function block data
The size of each instance is limited to 64 Kilobytes, the number of instances is unlimited (1)
The size of each instance is limited to 64 Kilobytes, the number of instances is unlimited (1)
The size of an instance and the number of instances are unlimited (1)
(1) The limit is defined according to the size of the PLC's internal memory.