Digital Inputs Generating Interrupts - Omron CJ1W-CT021 Operation Manual

Interrupts
4-6-2

Digital Inputs Generating Interrupts

Enabling / Disabling
Interrupts
General Setting:
m+5
External Interrupt Task
Offset
The 2 Digital Inputs can all be configured to generate interrupts to the CJ-series
CPU Unit. If a Digital Input is configured to generate interrupts, an interrupt is
issued to the CJ-series CPU Unit at a rising- or falling edge of the signal applied
to the Digital Input. The Function that is assigned to the Digital Input determines
if the interrupt is generated at a rising- or falling edge (refer to 3-4 "Digital Input
Functions").
Number Function
00 No Function
01 Gate Positive
02 Gate Negative
03 Preset Rising Edge
04 Preset Falling Edge
05 Reset Rising Edge
06 Reset Falling Edge
07 Capture Rising Edge
08 Capture Falling Edge
09 Stop, Capture and Continue
10 Stop, Capture and Continue (Inv)
11 Stop, Capture, Reset and Continue
12 Stop, Capture, Reset and Continue (Inv)
13 Capture-Reset Rising Edge
14 Capture-Reset Falling Edge
15 Enable Reset
16 Disable Reset
You can (DM-) configure a Digital Input to generate interrupts by setting the corre-
sponding bit in the Interrupt Enable Data of the Digital Inputs. The Interrupt Enable
Data of the Digital Inputs consists of 2 bits representing the 2 Digital Inputs. By
default the Inputs are disabled to generate interrupts.
15 14 13 12 11 10 9 8
Bits 0 and 1 correspond with the Physical Digital Inputs I0 and I1.
Every Digital Input that is enabled to generate interrupts is assigned to an external
interrupt task in the CJ-series CPU Unit. In the External Interrupt Task you should
write an appropriate (ladder) program that takes the required action on the occur-
rence of an interrupt.
7 6 5 4 3 2 1 0
I1 I0
Section 4-6
Interrupt on
Rising Edge
Rising Edge
Falling Edge
Rising Edge
Falling Edge
Rising Edge
Falling Edge
Rising Edge
Falling Edge
Rising Edge
Falling Edge
Rising Edge
Falling Edge
Rising Edge
Falling Edge
Rising Edge
Rising Edge
Interrupt Enable Data Inputs
0 = Interrupts Disabled
1 = Interrupts Enabled
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