Mitsubishi Electric M800VW Series Manual page 631

M800V/M80V Series PLC Development Manual
9 Appendix 3: PLC Function
9.1 Enhanced PLC Security Mode
Built-in PLC configuration
In the E/U mode, end users can create and store sequence programs in the E/U project.
On the other hand, if sequence programs were allowed to be output from E/U programs to all devices without any restrictions,
MTB programs might be affected and it could lead to malfunction of the machine.
Consequently, only part of remote I/O (Y device) is available for output from an E/U program. Other output is indirectly
performed via project-common devices (M, D devices) by creating interface in MTB programs.
The MTB can set the device range that can be customized by the end user (E/U open device) via parameters.
No restrictions apply to input to E/U programs.
The following shows the configuration of the built-in PLC when the E/U mode is enabled.
NC function / option information / NC parameter "PLC constant, bit selection" / remote I/O
Built-in PLC
Project-common device (X, Y, R, ZR, F)
MTB project
Independent
Program
MAIN01
MAIN02
・
・
・
MAIN30
IB-1501614-B
Project-common device (Y [remote I/O output])
All input is
allowed
device
Direct output
M
other than that of
D
remote I/O is
L
prohibited
W
T
C
SD
・
All output other
than that of remote
I/O is done by MTB
program
Project-common device (M,D)
E/U open interface
E/U project
Program
MAIN01
All input is
allowed
Output of common
devices is allowed
only for E/U open
devices
606
Output of remote I/O
is allowed only for
E/U open devices
Independent
device
M
D
L
W
T
C
SD
・