Nc Axis/Plc Axis Switchover; Outline - Mitsubishi Electric M800VW Series Programming Manual

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

14.35 NC Axis/PLC Axis Switchover

14.35 NC Axis/PLC Axis Switchover

14.35.1 Outline

This function is to use one drive unit by switching the control from the NC or the PLC dynamically. The function of the NC axis
can be used during the NC axis control and the function of the PLC axis can be used during the PLC axis control respectively.
A part of function or signal of the NC axis can also be used during the PLC axis control.
This function can be used for NC axis only.
The axis where this function is used needs to be set the PLC axis No. of the switching destination to the parameter "#2187
chgPLCax".
Only the unused PLC axis No. can be set to the switching destination. The same PLC axis No. cannot be set to the multiple
switching axes.
The number of axes where this function can be used is the number obtained by subtracting the number of PLC-exclusive axes
from the maximum number of PLC axes.
Switch NC axis with PLC
axis with PLC signal (NC
axis/PLC axis switchover
request)
X
Y
NC axis
The following shows the meaning of terms used in this chapter.
Terms
Axis to perform NC axis/PLC axis switchover (Axis whose parameter "#2187 chgPLCax" was set to
Switching axis
PLC axis No.)
PLC axis mode
In PLC axis control In the state that the switching axis can be operated as PLC axis (NC axis/PLC axis switchover in pro-
NC axis/PLC axis switcho- cess (XBC0) = ON)
ver in process
NC axis mode In the state that the switching axis can be operated as NC axis (NC axis/PLC axis switchover in pro-
In NC axis control cess (XBC0) = OFF)
Control mode Switching axis mode (PLC axis mode/NC axis mode)
PLC-exclusive axis Axis other than switching axis to control with user PLC command
IB-1501668-B
Z
A
NC axis
(Switching axis)
Meanings
856
NC axis command
PLC axis command
1
PLC axis