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Appendix D Use of Application Instructions|DOP-EXIO Series
Mnemonic
Operands
None
FEND
Bit Devices
X
Y
M
Function
The End of The Main Program (First End)
Word Devices
S
K
H
KnX KnY KnM KnS
T
16-bit instruction (1 Step)
C
D
E
y Note:
1.
No operand.
2.
No contact to drive the instruction is required.
F
FEND
Continuous
execution
-
32-bit instruction
-
-
-
-
y Flags: None
Explanations:
1.
This instruction denotes the end of the main program. It has the same function as that of END
instruction when being executed by DOP-EXIO series.
2.
CALL must be written after FEND instruction and add SRET instruction in the end of its
subroutine. Interruption program has to be written after FEND instruction and IRET must be
added in the end of the service program.
3.
If several FEND instructions are in use, place the subroutine and interruption service programs
between the final FEND and END instruction.
4.
After CALL instruction is executed, executing FEND before SRET will result in errors in the
program.
5.
After FOR instruction is executed, executing FEND before NEXT will result in errors in the
program.
D-8
Revision March, 2008, Doc. Name: 2007PDD23000014