Omron CJ1W-CT021 Operation Manual page 124

Memory Allocation
Word
(input)
n+25, n+26 00-15
n+27, n+28 00-15
n+29 00
01
02
03
04
05
06
07
08-09
10
11
12-14
15
n+30 to n+39 00-15
104
Bit Item
Ranges /
Comparison Values
active*
Counter Value
Counter Overflow
Counter Underflow
Counter Running /
Gate Open
Counting Direction
Preset Activated**
Reset Activated**
Capture Activated**,
***
Z-signal Activated**
---
Rate Range 0*
Rate Range 1*
---
Simple Counter
---
* These bits have no function for Simple Counters.
** The Reset, Preset, Capture, and Z-signal Activated Bits turn ON for at least
one CPU Unit-cycle after the occurrence of a pulse that was detected since
the previous I/O Refresh.
*** The Capture Bit turns ON once automatically after the power is turned ON and
after restart.
**** During initialization, the Data Transfer Busy bit turns ON for approximately
120 ms.
Counter 2
Ranges Active (=1) / Inactive (=0) /
Comparison Values Active (=1) / Inactive (=0)
Counter Value
Counter Overflow (=1), Upper Count Limit of Linear
Counter is reached
Counter Underflow (=1), Lower Count Limit of Linear
Counter is reached
Counter Running/Gate Open (=1),
Counter Stopped/Gate Closed (=0)
Counting Direction, Down (=0) / Up (=1)
Preset Activated (=1)
Reset Activated (=1)
Capture Activated (=1)
Z-signal Activated (=1)
Not used
Rate Range 0 Active (=1)
Rate Range 1 Active (=1)
Not used
Simple Counter (=1) / Circular/Linear Counter (=0)
Not used
Section 4-2
Function