4. Operation
4.3 Pulse Train Control Mode
4-114 ME0342-4B
Caution
● These signals become effective after the coordinate system is established following
home return. Turning on the power is not enough to output these signals.
● These signals are not available if the home return function of the controller is not used.
● The zone detection range would not turn ON unless the value exceeds that of the
minimum resolution (actuator lead length/800).
[9] Alarm, Alarm Reset (*ALM, RES)
PIO signal
1) Alarm signal *ALM is set to ON in the normal status but turned OFF at the occurrence of an
alarm at a level equal to or higher than the operation release level.
2) Turning reset signal RES ON under occurrence of an alarm at the operation release level
allows the alarm
(Note 1)
to be released. The action is taken at the rising edge (ON edge).
3) The alarm reset should be done after the cause of the alarm is confirmed and removed. If
alarm reset and restart are repeated many times without removal of the cause, a severe
failure such as motor burnout may occur.
Note 1 Refer to [8.3.3 Alarm Details] for details of alarms.
Caution
● An alarm of the cold start level cannot be cancelled by RES. Confirm the cause,
remove it, and then reboot the unit.
[10] Binary Output of Alarm Data Output (*ALM, PM1～8)
PIO signal
1) If an alarm at a level equal to or higher than the operation release level occurs, completed
position number output signals PM1 to PM8 output the alarm information in the binary code
format.
2) The PLC can read the binary code of alarm signal *ALM as the strobe signal to check the
alarm information.
Refer to [8.3.1 Simple Alarm Codes] for details of the binary codes.
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