Miscellaneous Function: Feedrate Override; Miscellaneous Function: Position Switch; Nc Axis Control Selection - Mitsubishi Electric M800VW Series Programming Manual

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

14.34.2.11 Miscellaneous Function: Feedrate Override

The feedrate set in the parameter will be effective after multiplied by override (%). Override, ranging from 0 to 100% and
commanded in 1% units, is valid for all movement except that in the handle mode. The override is invalidated when the
Override valid (OVR) signal is OFF; the feedrate in the parameter will be instantly effective.
The override command is designated with a 7-bit binary (OV1 to OV64). The override is handled as 100% if the command
exceeds 100%. If a 0% override is commanded, the axis will decelerate to stop, causing an operation error "M01 0103 Aux ax
feedrate 0".

14.34.2.12 Miscellaneous Function: Position Switch

This function sets virtual dog switches (position switches) on the coordinate set by the parameter instead of setting dog
switches on the machine's axis. PLC interface signals are output when the axis has reached the position.
Position switches (PSW1 to PSW15) can be set on 15 points at maximum for each axis. The area for each position switch is
set with the parameters ("#12871 aux_PSW1dog1", "#12872 aux_PSW1dog2" to "#12899 aux_PSW15dog1", and "#12900
aux_PSW15dog2").
The parameter ("#12870 aux_PSWcheck") has two options for the machine position; the machine position without droop in
the command system or the machine feedback position (actual machine position) including droop.

14.34.2.13 NC Axis Control Selection

NC axis can be controlled with the PLC axis indexing interfaces.
The signal's ON/OFF selects which controls the axis; PLC or NC.
NC controls the axis with machining programs.
PLC controls the axis with PLC axis indexing interfaces.
Preparation
Use "#12800 chgauxno" to set the NC axis which can be operated under PLC axis control.
Refer to the section of "14.34.3 Setup" for the settings.
Signals for the control selection
Signal name
Select the control method of the NC axis which can be operated under PLC control.
NC axis control selection n-
0: PLC control
th axis
1: NC control
This signal indicates the control status (NC control or PLC control) of the NC axis which can be
operated under PLC control.
In NC axis control n-th axis
0: PLC control
1: NC control
Explanations
837 IB-1501668-B