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(4) Timing chart (Example)
The timing chart below shows the sequence of the parallel I/O signals for an example operation after
power has been supplied to the controller.
Return to Origin position
→
Step Data No.1
→
Step Data No.2
→
Operation completed
(
The motor is de-energized
)
Note1) A PLC processing delay and controller scan delay should be considered when using the
controller I/O’s. Use a 2 msec interval or more between input signals, and maintain the signal
state for at least 2 msec.
Caution
When an alarm is generated.
If the LED [ALM] on the front of the controller turns red or flashes, an alarm has been generated.
Switch the SVON signal OFF and ON again for at least 2 msec to reset and cancel the alarm after
the cause of the alarm has been cleared.
Note) The type of the alarm can be detected by checking the combination of lit and flashing
ALARM and POWER LED’s. Refer to section “8. Alarm detection” (P.60) or the LATC4 series
controller operation manual for details of controller alarm detection and alarm types.
IN0
IN1
IN2
IN3
DRIVE
SVON
BUSY
INP
ALARM
Power
Input
signal
Note)
Output
signal
Speed
Power on
The signal turns ON after the controller has been initialized (negative logic).
Table stops
The motor is de-energized
Start of operation
Table enters
the INP range
24V
2
0V
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
ON
OFF
0mm/s
Start of operation
The controller reads the
Step Data number from
(IN0-IN3) when the Drive
signal is turmed ON.
Step data No.1
:
0001
Return to origin
position
:
0000
Step data
No.2
:
0010
Return to origin completed
LED [PWR]
:
Green
LED [ALM]
:
Red
Input signal
SVON
Output signal
ALARM
ON
OFF
ON
OFF
Alarm generated
Remove the cause of the alarm
Reset