A-2-35 Special Function Block Instructions; A-2-36 Sfc Instructions; A-2-37 Function Block Instance Execution Time - Omron CJ2 CPU UNIT SOFTWARE User Manual

A-2-35 Special Function Block Instructions
Instruction Mnemonic
GET VARIABLE ID GETID
A-2-36 SFC Instructions
Instruction Mnemonic
STEP ACTIVATE SA
STEP DEACTIVATE SE
READ SET TIMER TSR
SET STEP TIMER TSW
SFC ON SFCON
SFC OFF SFCOFF
SFC PAUSE WITH SFCPR
RESET
SFC PAUSE NO WITH SFCPRN
RESET
A-2-37 Function Block Instance Execution Time
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.
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.
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
CJ2 CPU Unit Software User's Manual
FUN No. Length (steps)
286 4
FUN No. Length (steps)
784 2
785 2
780 3
781 3
789 2
790 2
793 2
791 2
Operation
Startup time not including I/O parameter
transfer
1-bit (BOOL) input symbol or output
symbol
1-word (INT, UINT, WORD) input sym-
bol or output symbol
2-word (DINT, UDINT, DWORD, REAL)
input symbol or output symbol
4-word (LINT, ULINT, LWORD, LREAL)
input symbol or output symbol
I/O symbols
Total instruction processing time (same as standard user program)
ON execution time (µs)
CJ2H CJ2M-
CPU6@(-EIP) CPU@@
7.6 12.5
ON execution time (µs)
CJ2H
CJ2M-CPU@@
CPU6@(-EIP)
9.1 11.8
9.1 11.9
3.9 4.2
5.7 8.2
14.0 20.4
249 402
249 405
249 405
CPU Unit model
CJ2H-
CPU6@(-EIP)
3.3 µs
0.24 µs
0.19 µs
0.19 µs
0.38 µs
0.114 µs
Appendices
Conditions
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Conditions
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CJ2M-
CPU@@
7.4 µs
0.88 µs
0.88 µs
1.2 µs
2.96 µs
0.4 µs
A-109