Specifications

Program Example 2: Timed Interrupt
The following program selects Mode 40, then selects the timed interrupt option, with an
interrupt period of 100 ms.
Inputs X0, X1, X2, and X3, are configured as filtered inputs with a 10 ms time constant.
Note that X0 uses the time constant from X1. The program is otherwise generic, and may be
adapted to your application.
NOTE: X0 Cannot be used in the main program logic; however, using X0 to set C10, for instance, will
allow the use of C10 in the main program logic. Do not forget to reset C10.
DL06 Micro PLC User Manual, 3rd Edition, Rev. C
E–71
Appendix E: High-speed Input and Pulse Output Features
1
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E
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A
B
C
D
Time
T
imed
Interrupt
100 ms
SP0
LD
K40
Load constant K40 into the accumulator. This
selects Mode 40 as the HSIO mode.
OUT
V7633
Output this constant to V7633, the location of the
HSIO Mode select register.
D
irect SOFT
Mode 40
LD
K1006
Load the constant K1006 which is required to select
filtered inputs with a 10 ms filter time constant.
OUT
V7635
Output this constant to V7635, configuring X1 and X0.
Filtered Inputs
OUT
V7636
Output this constant to V7636, configuring X2.
LD
K1004
Load the constant K1004 which is required to select
the timed interrrupt option, with a period of 100 mS.
OUT
V7634
Output this constant to V7634, configuring the timed
interrupt for 100 ms period.
Timed Interrupt
INT Enable
ENI
Enable Interrupts at the beginning of the program.
END
END coil marks the end of the main program..
INT O0
IRT
Return to the main ladder program.
The INT label marks the beginning of the interrupt
service routine program.
Main Program
Insert Main Program rungs here for your application.
Interrupt Routine
Insert interrupt service routine rungs here for your
application.
SP1
LD
K1
Load constant K1 into the accumulator.
ADD
V2000
OUT
V2000
Add the value in the accumulator with the value in
memory location V2000.
Output the result into memory location V2000.
OUT
V7637
Output this constant to V7637, configuring X3.