Mitsubishi Electric M800VW Series Programming Manual page 879

M800V/M80V Series PLC Programming Manual (2/2)
14 PLC Help Function
14.35 NC Axis/PLC Axis Switchover
Switching axes
Switching between NC axis and PLC axis can be performed with NC axis/PLC axis switchover request signal
(NPCHGREQn:YBC0). When controlling as PLC axis, turn ON the signal and when controlling as NC axis, turn OFF the
signal.
Also, this signal outputs the current control mode to NC axis/PLC axis in switchover signal (NPCHGMODn:XBC0). For PLC
axis mode, turn ON the signal and for NC axis mode, turn OFF the signal.
However, if the switching condition is not satisfied (NC axis/PLC axis switchover invalid status signal (NPCHGIS:XBA0) is
turned ON), when NC axis/PLC axis switchover request signal (NPCHGREQn:YBC0) is turned ON/OFF, the operation error
(M01 1250) (*1) occurs and the switching is not performed.
NC axis/PLC axis switchover invalid status signal is turned ON when the valid axis of the NC/PLC axis switching is in the
following conditions.
 While the axis is in motion (*2)
 When the movement is stopped by the override zero or feed hold
 During the Servo OFF
 While the axis is being removed
 While the axis is stopped for interlock
 During the current limit
 During the droop cancel
 During the H/W OT or soft limit
 During the manual machine lock
 The reference axis or superimposed axis that is under the control axis superimposition
 The reference axis or synchronized axis that is under the control axis synchronization between part systems
 The chopping axis during the chopping
 The rotary tool axis during the tool spindle synchronization II (polygon)
 The workpiece axis during the tool spindle synchronization II (hobbing)
 The axis of the part system which is during the high-speed machining mode II/high-speed high-accuracy control II
(*1) When the operation error (M01 1250) occurs, NC axis name is displayed regardless of the control mode.
(*2) When travel command is given to multiple axes in one program block, and the switchover target axis is at a stop after the
completion of movement, the switchover is disabled if any other axis is still moving.
NC axis/PLC axis switchover request
(NPCHGREQn)
NC axis/PLC axis switchover invalid status
(NPCHGISn)
Speed
0
NC axis/PLC axis in switchover
NC axis mode
(NPCHGMODn)
(1) The NC axis/PLC axis switchover request signal is turned OFF to ON, and the NC axis/PLC axis switchover invalid status
signal is OFF (switching is permitted). Therefore the axis changes over to the PLC axis mode and the NC axis/PLC axis
in switchover is turned ON.
(2) The NC axis/PLC axis switchover request signal is turned OFF, but the NC axis/PLC axis switchover invalid status signal
is ON (switching is prohibited). Therefore the axis does not change over to the NC axis mode and the operation error
(M01 1250) occurs.
(3) The NC axis/PLC axis switchover invalid status signal is turned OFF when the axis movement is completed. And then it is
switched to the NC axis mode, and the NC axis/PLC axis in switchover signal is turned ON.
IB-1501668-B
PLC axis mode
(1)
858
NC axis mode
(2) (3)