Omron CP1L Operation Manual page 212

High-speed Counters
Auxiliary Area Data
Allocation
PV storage words
Range Comparison Con-
dition Met Flags
Comparison In-progress
Flags
Overflow/Underflow Flags ON when an overflow or underflow has
Count Direction Flags
Counter Input Modes
Differential Phase Mode
(4x)
Phase-A
Phase-B
Count
Pulse + Direction Mode
Pulse
Direction
178
Function
Leftmost 4 digits
Rightmost 4 digits
Range 1 Comparison Condition Met Flag
Range 2 Comparison Condition Met Flag
Range 3 Comparison Condition Met Flag
Range 4 Comparison Condition Met Flag
Range 5 Comparison Condition Met Flag
Range 6 Comparison Condition Met Flag
Range 7 Comparison Condition Met Flag
Range 8 Comparison Condition Met Flag
ON when a comparison operation is being exe-
cuted for the high-speed counter.
occurred in the high-speed counter's PV.
(Used only when the counting mode is set to
Linear Mode.)
0: Decrementing
1: Incrementing
The differential phase mode uses two phase signals (phase A and phase B)
and increments/decrements the count according to the status of these two
signals.
0 1 2 3 4 5 6 7 8 9 10
Conditions for Incrementing/Decrementing the Count
Phase A
↑
H
↓
L
L
↑
H
↓
The pulse + direction mode uses a direction signal input and pulse signal
input. The count is incremented or decremented depending on the status (ON
or OFF) of the direction signal.
0 1 2 3 4
11 12 11 10 9 8 7 6 5
Phase B Count value
L Increment
↑
Increment
H Increment
↓
Increment
↑
Decrement
H Decrement
↓
Decrement
L Decrement
5 6 7 8
High-speed counter number
0 1
A271 A273
A270 A272
A274.00 A275.00
A274.01 A275.01
A274.02 A275.02
A274.03 A275.03
A274.04 A275.04
A274.05 A275.05
A274.06 A275.06
A274.07 A275.07
A274.08 A275.08
A274.09 A275.09
A274.10 A275.10
4 3 2 1 2 3 4
7 6 5 4 3 2
Section 5-1
2 3
A317 A319
A316 A318
A320.00 A321.00
A320.01 A321.01
A320.02 A321.02
A320.03 A321.03
A320.04 A321.04
A320.05 A321.05
A320.06 A321.06
A320.07 A321.07
A320.08 A321.08
A320.09 A321.09
A320.10 A321.10
5 6 7 8
1 0