High
-S
peed
Input
and
Pulse
O
utput
Features
3--43
High-Speed Input and Pulse Output Features
DL105 PLC User Manual, 3rd Edition
Mode 40: High-Speed Interrupts
The HSIO Mode 40 provides a high-speed interrupt to the ladder program. This
capability is provided for your choice of the following application scenarios:
S
An external event needs to trigger an interrupt subroutine in the CPU.
Using immediate I/O instructions in the subroutine is typical.
S
An interrupt routine needs to occur on a timed basis which is different
from the CPU scan time (either faster or slower). The timed interrupt is
programmable, from 5 to 999 mS.
The HSIO circuit creates the high-speed interrupt to the CPU. The following diagram
shows the external interrupt option, which uses X0. In this configuration, X1, X2, and
X3 are all normal filtered inputs.
Output Circuit
Input Circuit
CPU
PLC
DL105
X0
Y0, Y1
X4-- X11
Y2 -- Y7
V-memory
V7633 xx40
Mode Select
I/O data
HSIO
Interrupt
X1, X2, X3
Interrupt
FILTER
Alternately, you may configure the HSIO circuit to generate interrupts based on a
timer, as shown below. In this configuration, inputs X0 through X3 are filtered inputs.
Output Circuit
Input Circuit
CPU
PLC
DL105
Y0, Y1
X4-- X11
Y2 -- Y7
V-memory
V7633 xx40
Mode Select
I/O data
HSIO
Timer
X0, X1, X2, X3
Interrupt
Interrupt
FILTER
Purpose
Functional Block
Diagram
Summary of Contents for DL105
Page 2: ...DL105 PLC User Manual Manual Number D1 USER M...
Page 308: ...1B DL105 Error Codes In This Appendix Error Code Table...
Page 314: ...1C Instruction Execution Times In This Appendix Introduction Instruction Execution Times...
Page 324: ...1D Special Relays In This Appendix DL105 PLC Special Relays...
Page 327: ...1E PLC Memory In This Appendix DL105 PLC Memory...