Omron CJ - INSTRUCTIONS Reference Manual page 1259

4-3-34 Function Block Instance Execution Time (CPU Units with Unit
Version 3.0 or later)
Operation
A Startup time
B I/O parameter transfer pro-
cessing time
The data type is indicated in
parentheses.
C Function block definition
instruction execution time
CS/CJ/NSJ Series Instructions Reference Manual (W474)
4. Instruction Execution Times and Number of Steps
Use the following equation to calculate the effect of instance execution on the
cycle time when function block definitions have been created and the
instances copied into the user program using CS/CJ-series CPU Units with
unit version 3.0 or later.
Effect of Instance Execution on Cycle Time
= Startup time (A)
+ I/O parameter transfer processing time (B)
+ Execution time of instructions in function block definition (C)
The following table shows the length of time for A, B, and C.
Startup time not including I/
O parameter transfer
1-bit (BOOL) input symbol or
output symbol
1-word (INT, UINT, WORD)
input symbol or output sym-
bol
2-word (DINT, UDINT,
DWORD, REAL) input sym-
bol or output symbol
4-word (LINT, ULINT,
LWORD, LREAL) input sym-
bol or output symbol
I/O symbols
Total instruction processing time (same as standard user program)
Example: CS1H-CPU63H
Input variables with a 1-word data type (INT): 3
Output variables with a 1-word data type (INT): 2
Total instruction processing time in function block definition section: 10 s
Execution time for 1 instance = 6.8 s + (3 + 2)
Note The execution time is increased according to the number of multiple
instances when the same function block definition has been copied
to multiple locations.
Note Guidelines on Converting Program Capacities from Previous OMRON PLCs
Guidelines are provided in the following table for converting the program
capacity (unit: words) of previous OMRON PLCs (SYSMAC C200HX/HG/HE,
CVM1, or CV-series PLCs) to the program capacity (unit: steps) of the CS-
series PLCs.
CPU Unit model
CJ1H- CS1H-
CPU6@H-R CPU6@H
CJ1H-
CPU6@H
3.3 s 6.8 s
0.24 s 0.4 s
0.19 s 0.3 s
0.19 s 0.5 s
0.38 s 1.0 s
0.33 s 0.4 s
0.3 s + 10 s = 18.3 s
CS1G- CJ1M-
CPU4@H CPU@@
CJ1G-
CPU4@H
8.8 s 15.0 s
0.7 s 1.0 s
0.6 s 0.8 s
0.8 s 1.1 s
1.6 s 2.2 s
0.5 s 1.2 s
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