Writing In Program During Cpu Module Run; Online Change In Ladder Mode - Mitsubishi MELSEC QS Series User Manual

6
FUNCTIONS

6.14 Writing in Program during CPU Module RUN

With the CPU module, writing during RUN is possible in ladder mode.

6.14.1 Online change in ladder mode

(1) Writing data in the circuit mode during RUN Status
Writing data in the circuit mode during RUN is a function to write a program during the
CPU module RUN status.
Writing data in the circuit mode during RUN can be executed only at TEST MODE.
The program can be changed without stopping the process in CPU module program
by performing writing data in the circuit mode during RUN status.
(2) Precautions
Take a note of the following when online change is performed:
(a) Memory enabled for online change
(b) Online change performed during boot run
(c) Number of steps enabled for online change at once
X100 X102
X104
X106 X108
X104
Change by GX Developer and write in
CPU module at the conversion
Diagram 6.26 Outline of online change in ladder mode
The memory that can be written during RUN is only program memory.
When writing during RUN is executed, the boot source program is not changed.
Write the contents of program memory to standard ROM before the PLC power-off
or the CPU module reset after writing during RUN.
A maximum of 512 steps can be written at once during RUN.
6.14 Writing in Program during CPU Module RUN
Y100
SET M10
END
GX Developer
6.14.1 Online change in ladder mode
1
2
3
4
5
6
7
8
6
- 55