Omron SYSMAC CP Series, Руководство пользователя

Страница: 198 / 578

11 High-speed Counters
11-28
CP2E CPU Unit Software User’s Manual(W614)
3
Select the
Use high speed counter 0
Check Box for high-speed counter 0.
4
Select
Linear Mode
for the counting mode.
5
Select
Software reset (comparing)
for the reset method.
6
Select
Differential phase input
for the input setting.
7
Close the PLC Settings Dialog Box.
8
Restart the PLC.
The changes made to the PLC Setup is applied.
z
Programming Example 1
In this example, the CTBL (COMPARISON TABLE LOAD) instruction is used to create an interrupt
when the target value is reached. Slowing and stopping are executed as interrupt tasks, allowing
high-speed processes to be executed without affecting the cycle time.
Ladder Program
Use the CTBL instruction to execute interrupt tasks when the target positions are reached.
Motor start
Reset w ith motor stopped
The High-speed Co u nter Reset
Bit 0 is t u rned O N and the reset
process is performed
Specifies high-speed co u nter 0
Specifies comparision w ith target
v al u es and starts comparison
First w ord of comparision ta b le
T u rns O N motor r u n o u tp u t
After motor stops, the stop position is checked.
Motor stopped N ormal stop
position
Error stop
position
The stop position is normal if the
present
v al u e of the high-speed
co u nter (A270) is b et w een 3500
(0DAC hex) and 3550 (0DDE hex).
The stop position is in error if
the present
v al u e of the high-
speed co u nter (A270) is
greater than 3550 (0DDE hex).
&3500
&3550
&3550