Chapter 7 Absolute Reset and Absolute Battery
200
Voltage PIO Signals Alarm
3.1V (Reference value) Voltage drop alert signal *BALM
(Note 2)
OFF –
2.5V (Reference value) Alarm signal *ALM
(Note 2)
OFF OEE Absolute Encoder Error
Detection 2
or
OEF Absolute Encoder Error
Detection 3
(Note 2) *BALM and *ALM are the signals of active low.
After the power is supplied to the controller, they are usually on and turned OFF when
an error is detected.
Replace the battery before alarm is generated due to the lamp display by *BALM signal
of PLC.
If the alarm is generated, it will be necessary to absolute reset after the battery
replacement.
3.6V
3.1V
2.5V
*ALM OFF
Absolute reset
required
ON
OFF
ON
OFF
Battery voltage
*ALM signal
*BALM signal
(PIO)
Absolute reset not required
Normal
Warning occurred
Alarm
occurred
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