Write-Protect Function For Device Data (From Outside The Cpu Module) - Mitsubishi Electric Q01UCPU User Manual

3.37
Write-Protect Function for Device Data (from Outside the
CPU Module)
This function disables device data writing (including the file register) from outside the CPU module such as the
programming tool, GOT, SLMP/MC protocol, and FTP to the write-protected range set in the parameter. Desired
device data can be protected from
Even when the write-protected range is set, the operation of the CPU module which is set and device data writing by
the execution of functions (device data writing by instructions and internal device data writing by initial device value
setting, boot operation, and CPU module data backup/restoration function) are not inhibited.
▪ Internal operations by using
instructions
▪ Setting of initial device values
▪ Link refresh
M0, D0, ZR0 =
M200, D10000, ZR100 =
Writing device data
from the programming tool
M0, D0 =
M200, D10000, ZR100 =
: Can be written (function/instruction can be executed)
×: Cannot be written (function/instruction cannot be executed)
Note 3.25 Universal
The write-protect function for device data (from outside the CPU module) can be used only with the High-speed Universal
model QCPU. When using the write-protect function for device data (from outside the CPU module), check the versions
of the CPU module and programming tool used. (
Note 3.25
tampering.Note 3.25
Writing device data
from an external device
M0, D0 =
D10000, ZR100 =
Writing device data
from GOT
M0, ZR0 =
ZR100 =
▪ Boot operation =
▪ CPU module change function with memory card
▪ CPU module data backup/restoration function
Device memory
M0
M M
M200
D0
D D
D10000
Standard RAM
ZR0
ZR100
ZR ZR
Simple PLC communication
function (writing data to
a destination device)
D0 =
D10000 =
Page 462, Appendix 2)
CHAPTER 3 FUNCTIONS
=
=
: Writing enabled
: Writing disabled
Writing device data by
using network dedicated
instructions
D0 =
D10000 =
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