Plc Axis Monitor; Absolute Position Detection; Arbitrary Device Assignment - Mitsubishi Electric M800VW Series Programming Manual

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

14.33.10 PLC Axis Monitor

The PLC axis operation status can be confirmed by checking the PLC section on the servo monitor.

14.33.11 Absolute Position Detection

The absolute position of the PLC axis can be detected in the same manner as the NC control axis.
The initial setting operations are the same as the NC control axis. However, the following restrictions apply to the absolute
position detection with the PLC axis.
 Automatic initialization is not possible.
 The verify function cannot be used.
 The near zero-point signal cannot be output.

14.33.12 Arbitrary Device Assignment

The device random assignment can be performed on PLC axis similar to NC control axis.
Select the validity of the device random assignment of the PLC axis with the parameter "#1246 set18/bit7".
ON
#1226 aux10/bit5
OFF
When this function is valid, the devices which were arbitrarily allocated becomes invalid by inputting the "PLC axis near-point
dog ignored" signal (R279) or "PLC axis OT ignored" signal (R255).
(By turning the bit ON of the corresponding axis, the device which is randomly allocated to the axis will be ignored.)
F E D C B A
bit0: 1st axis
bit1: 2nd axis
: :
bit7: 8th axis
Note
(1) When the parameters "#2073" to "#2075" are valid, do not set the same device number.
(When the device random assignment is valid for the NC control axis, do not set the same device No. as the ones set in
the parameters ("#2073" to "#2075") of the NC control axes.
If the same device number exists, an emergency stop occurs.
#1246 set18/bit7
ON
NC axis random device assignment valid
PLC axis random device assignment
valid
NC axis random device assignment invalid
9 8 7 6 5 4
OFF
PLC axis random device assignment in-
valid
3 2 1 0
819 IB-1501668-B