Mitsubishi Electric M80V Series Manual page 180

M800V/M80V Series PLC Interface Manual
4 Explanation of Interface Signals
4.1 PLC Input Signals (Bit Type: X***)
Cont. Signal name
A Battery alarm
[Function]
This signal indicates that the battery voltage that is supplied to the control equipment (NC controller or graphic control unit)
to save data and to the absolute encoders has dropped below the battery alarm detection threshold.
[Operation]
The signal turns ON when:
(1) The battery voltage for saving data, which is checked constantly, has dropped below the battery alarm detection
threshold.
The alarm message "Z52 Battery fault 0003" is displayed for NC control unit, "Z52 Battery fault 0030" is displayed for
graphic control unit, and "Z52 Battery fault 0033" is displayed for both units.
(2) An error is detected in the circuit to monitor the battery voltage for saving data. The alarm message "Z52 Battery fault
0002" is displayed for NC control unit, "Z52 Battery fault 0020" is displayed for graphic control unit, and "Z52 Battery
fault 0022" is displayed for both units.
(3) The drop in the voltage of backup power supply (battery voltage) in an absolute encoder is detected. The alarm mes-
sage "Z71 AbsEncoder: Backup voltage drop 0001" is displayed.
(4) The absolute position is lost due to the drop in the voltage of backup power supply (battery voltage) in an absolute
encoder.
The alarm message "Z70 Abs posn error (servo alm 25) 0101" is displayed.
When this signal is ON, cycle operation cannot be started.
The signal turns OFF when:
 Reset was done after battery replacement (if the alarm is caused by the ON condition (1)).
 After the error in power supply voltage is eliminated, the power was turned ON again (if the alarm is caused by the ON
conditions (2) and (3)).
[Caution]
(1) When the battery alarm occurs, especially due to the ON condition (1), turning OFF the power of the control equip-
ment without battery replacement may corrupt stored data such as machining programs. Replace the battery and con-
firm that this signal is turned OFF before turning OFF the power of the control equipment.
If the battery alarm has already occurred when the power of the control equipment is turned ON, especially due to the
ON condition (1), consider that the stored data such as machining programs have been corrupted.
(2) If detection of battery alarm or battery warning is disabled (#6449/bit4 = 1), this signal is not turned ON and no alarm
messages is displayed.
(3) As a precaution against this alarm, ensure that data in control equipment are backed up.
[Related signals]
(1) Battery warning (BATWR: X70E)
(2) Battery drop cause (R56)
Cont. Signal name
A High-speed simple program check mode ON
[Function]
This signal indicates that the high-speed simple program check mode has been entered.
[Operation]
This signal turns ON when the "High-speed simple program check mode" signal (SMLK: Y73E) is input.
[Related signals]
(1) High-speed simple program check mode (SMLK: Y73E)
Abbrev. Common ($)
BATAL X70F
Abbrev. Common ($)
SMLKO X712
167 IB-1501616-D