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Oganization Blocks (ob) - Siemens CPU 412-1 Instruction Manual

S7-400; cpu 412 series; cpu 414 series; cpu 416 series; cpu 417 series;.
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Oganization Blocks (OB)

A user program for the S7-400 is made up of blocks containing the statements, parameters and data for the relevant CPU. The number of
blocks you can create or which are provided by the operating system is different for each of the S7-400 CPUs. You will find a detailed
description of the OBs and their use in the STEP 7 Programming Manual.
Organization
CPU
Blocks
412
Free cycle
OB 1
x
Time-of-day interrupts
OB 10
x
OB 11
x
OB 12
OB 13
OB 14
OB 15
OB 16
OB 17
S7-400 Instruction List
A5E00267845-01
CPU
CPU
CPU
414
414-4H
416
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
x
CPU
CPU
417
417-4H
x
x
1101, 1102, 1103, 1104, 1105
x
x
1111
x
x
1112
x
x
1113
x
x
1114
x
x
1115
x
x
1116
x
x
1117
x
x
1118
Oganization Blocks (OB)
Start Events
(Hexadecimal Values)
99

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