Omron CX-PROGRAMMER 5.0-FUNCTION BLOCK OPERATION Operation Manual page 34

Function blocks
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This section provides specifications for reference when using function blocks, including specifications on function blocks,
instances, and compatible PLCs, as well as usage precautions and guidelines.
2-1
Function Block Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1-1
Function Block Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-1-2
Function Block Elements . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-2
Instance Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-2-1
Composition of an Instance . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-2-2
Parameter Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-2-3
Operating Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-3
Restrictions on Function Blocks . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-4
Function Block Applications Guidelines . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-4-1
Deciding on Variable Data Types . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-4-2
2-4-3
AT Settings for Internal Variables. . . . . . . . . . . . . . . . . . . . . . . . . . .
2-4-4
Array Settings for Internal Variables . . . . . . . . . . . . . . . . . . . . . . . .
2-4-5
2-4-6
Using Index Registers. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-5
of Multiple Words . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6
Instruction Support and Operand Restrictions . . . . . . . . . . . . . . . . . . . . . . . .
2-6-1
Sequence Input Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6-2
Sequence Output Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6-3
Sequence Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6-4
Timer and Counter Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6-5
Comparison Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6-6
Data Movement Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6-7
Data Shift Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6-8
Increment/Decrement Instructions . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6-9
Symbol Math Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6-10 Conversion Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6-11 Logic Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6-12 Special Math Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6-13 Floating-point Math Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6-14 Double-precision Floating-point Instructions. . . . . . . . . . . . . . . . . .
2-6-16 Data Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6-17 Subroutine Instructions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
2-6-18 Interrupt Control Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
(CJ1M-CPU21/22/23 Only) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
SECTION 2
Specifications
21
21
21
30
30
34
35
37
42
42
42
43
44
45
46
49
52
53
55
56
57
60
62
64
67
67
72
74
76
76
80
82
85
86
87
88
19

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