Omron SYSMAC CP2E-N D Series User Manual

11-9
11 High-speed Counters
CP2E CPU Unit Software User’s Manual(W614)
11-2 High-speed Counter Inputs
11
11-2-1 Pulse Input Methods Settings
The Pulse + Direction Input uses a direction signal and a pulse signal. The count is incremented or dec-
remented depending on the status (ON or OFF) of the direction signal.
Precautions for Correct UsePrecautions for Correct Use
• Interval of Phase-Z input signal
Do not input the phase-Z signal at a high frequency. The interval of phase-Z input signal must
be longer than 500µs.
If the phase-Z signal is input at a high frequency, cycle time exceeded error may occur.
• Interval of direction changing
If the input setting is set for pulse+direction inputs, do not change the direction at a high fre-
quency. The interval of direction signal ON or OFF must be longer than 3ms plus the sum of
execution time for interrupt tasks that may possibly happen at the same time.
The sum of execution time for interrupt tasks in one cycle is stored in A442.
If the direction signal is ON or OFF at a high frequency, count values may not agree.
Cycle time exceeded error possibly occurs when changing the direction at a high frequency.
Therefore, please do not connect chattering equipment as direction signal input such as relay
and switch.
• Interval of pulse input after direction changing
If the input setting is set for pulse+direction inputs, the Interval of pulse input after the direction
changing must be longer than 500µs.
If the pulse is output immediately after the direction changing, count values may not agree.
Pulse + Direction Input
Conditions for Incrementing/
Decrementing the Count
Pulse
Direction
22 11 0076876554433
Direction Pulse Count value
No change
No change
No change
No change
No change
No change
Decrement
Increment
· The count is incremented when the
direction signal is ON and
decremented when it is OFF.
· Only rising edges are counted.
OFF
ON
ON
OFF
ON→OFF
ON→OFF
OFF→ON
OFF→ON
ON
OFF
OFF
ON
ON→OFF
ON→OFF
OFF→ON
OFF→ON
500µs min.
Phase-Z signal
3ms plus the sum of execution time
for interru
p
t tasks
Pulse
Direction
500µs min.
Pulse
Direction

Omron SYSMAC CP2E-N D Series Specifications

General

Brand	Omron
Model	SYSMAC CP2E-N D Series
Category	Computer Hardware
Language	English