Digital Input Functions - Omron CJ1W-CT021 Operation Manual

Digital Input Functions

3-4

Digital Input Functions

Assigning multiple Digital
Inputs to single Counters
Digital Input Functions
I0 I1
m+17 m+18
The High-speed Counter Unit is equipped with two Digital Inputs allowing every
Counter to be controlled by a Digital Input. For applications that require a Counter
to be controlled by more than one Digital Input, multiple Digital Inputs (i) can be
assigned to a Counter (i ≤ 2). Digital Inputs can only be assigned to single
Counters. Consequently, if all Digital Inputs are assigned to one Counter, they are
not available any more for the other Counters.
Digital Input 0
Digital Input 1
Note Every Digital Input can be configured to generate an Interrupt to the CPU. For
details refer to 4-6-2 "Digital Inputs Generating Interrupts".
Furthermore, the function of every Digital Input can be selected from one out of 17
available functions. Every function performs its unique action on the Counter to
which it is assigned. The action can be performed on the rising or on the falling
edge of the Digital Input signal. Depending on the requirements of your application
you must select the corresponding Function. By default no function is assigned to
the Digital Inputs and no action is performed on a rising or falling edge of the Dig-
ital Input signal (only the status of the Digital Input is reported in CIO).
15 14 13 12 11 10 9
assigned to
assigned to
8 7 6 5 4 3 2 1
10
(BCD)
11
12 = Stop, Capture, Reset and Continue (inverted
(BCD)
Counter 'c'
Counter 'c'
0
Digital Input Function:
00 = No Function
(BCD)
01 = Gate Positive
(BCD)
02 = Gate Negative
(BCD)
03 = Preset Rising Edge
(BCD)
04 = Preset Falling Edge
(BCD)
05 = Reset Rising Edge
(BCD)
06 = Reset Falling Edge
(BCD)
07 = Capture Rising Edge
(BCD)
08 = Capture Falling Edge
(BCD)
09 = Stop, Capture and Continue
(BCD)
= Stop, Capture and Continue (inverted)
= Stop, Capture, Reset and Continue
(BCD)
13 = Capture-Reset Rising Edge
(BCD)
14 = Capture-Reset Falling Edge
(BCD)
15 = Enable Reset
(BCD)
16 = Disable Reset
(BCD)
01
(BCD)
02
(BCD)
Section 3-4
c = 1 or 2
Counter:
= Counter 1
= Counter 2
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