362 auxiliary area allocations appendix d, Sequence input instructions, Sequence output instructions – Omron HOME SECURITY SYSTEM - MOTION SENSOR FQM1-MMA21 User Manual
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362
Auxiliary Area Allocations
Appendix D
FQM1 Instruction Execution Times and Number of Steps
The following table lists the execution times for all instructions that are available for the FQM1.
The total execution time of instructions within one whole user program is the process time for program execu-
tion when calculating the cycle time. (See note.)
Note User programs are allocated tasks that can be executed within cyclic tasks and interrupt tasks that sat-
isfy interrupt conditions.
Execution times for most instructions differ depending on the conditions when the instruction is executed. The
execution time can also vary when the execution condition is OFF.
The following table also lists the length of each instruction in the Length (steps) column. The number of steps
required in the user program area for each of the instructions varies from 1 to 7 steps, depending upon the
instruction and the operands used with it. The number of steps in a program is not the same as the number of
instructions.
Note
(1) Program capacity for the FQM1 is measured in steps. Basically speaking, 1 step is equivalent to 1
word.
Most instructions are supported in differentiated form (indicated with
↑, ↓, @, and %). Specifying
differentiation will increase the execution times by the following amounts.
(2) Use the following time as a guideline when instructions are not executed.
Approx. 0.2 to 0.5
µs
Sequence Input Instructions
Note When a double-length operand is used, add 1 to the value shown in the length column in the above
table.
Sequence Output Instructions
Symbol
µs
↑ or ↓
+0.5
@ or %
+0.5
Instruction
Mnemonic
Code
Length
(steps)
(See
note.)
ON execution
time (
µs)
Hardware
implementation
Conditions
LOAD
LD
---
1
0.10
Yes
---
LOAD NOT
LD NOT
---
1
0.10
Yes
---
AND
AND
---
1
0.10
Yes
---
AND NOT
AND NOT
---
1
0.10
Yes
---
OR
OR
---
1
0.10
Yes
---
OR NOT
OR NOT
---
1
0.10
Yes
---
AND LOAD
AND LD
---
1
0.05
Yes
---
OR LOAD
OR LD
---
1
0.05
Yes
---
Instruction
Mnemonic
Code
Length
(steps)
(See
note.)
ON execution
time (
µs)
Hardware
implementation
Conditions
OUTPUT
OUT
---
1
0.35
Yes
---
OUTPUT NOT
OUT NOT
---
1
0.35
Yes
---
KEEP
KEEP
011
1
0.40
Yes
---
DIFFERENTIATE UP
DIFU
013
2
0.50
Yes
---
DIFFERENTIATE
DOWN
DIFD
014
2
0.50
Yes
---
SET
SET
---
1
0.30
Yes
---
RESET
RSET
---
1
0.30
Yes
---