Precautions - Mitsubishi Electric M800VW Series Programming Manual

M800V/M80V Series PLC Programming Manual (2/2)
14 PLC Help Function
14.33 PLC Axis Control

14.33.14 Precautions

(1) When either of a master axis or slave axis of synchronous control is in NC axis mode of NC axis/PLC axis switchover, an
alarm occurs if "Start" is input (turning the "R1n+3/bit0" ON) in the "Control Signals" (PLC axis control information data) of
the master axis or slave axis. (Alarm No. "20" is input in the "Alarm" (PLC axis control information data).)
(2) When both the master axis and slave axis of synchronous control are in PLC axis mode of NC axis/PLC axis switchover,
an alarm occurs if any of the following operations is carried out. (Alarm No. "21" is input in the "Alarm" (PLC axis control
information data).)
 When "Start" is input (turning the "R1n+3/bit0" ON) to the "Control Signals" (PLC axis control information data) of the
slave axis
 When an axis of the PLC axis mode is returned to the reference position
(3) If the reset input (control signal bit2) for PLC axis remains ON when the emergency stop is canceled during PLC axis con-
trol, the "Emergency stop CVIN" (the external emergency stop function for power supply) may not be canceled. To cancel
the emergency stop, turn OFF the reset input (control signal bit2).
PLC axis control valid signal
Emergency stop
Control signal bit2: reset
Emergency stop cancel
Control signal OFF
821 IB-1501668-B