[Design Instructions]
!

DANGER
• For data change, program change, and status control made to the PLC which is running from a
Personal computer, configure the interlock circui t externally so that the system safety is
ensured. The action to be taken for the system at the occurrence of communication errors
caused by such as loose cable connection must be determined for online operation of PLC from
Personal computers.

!

CAUTION
• Before performing online operations (progr am change during PLC CPU RUN, forced I/O
operation, RUN-STOP or sim ilar operating condition change, remote operation) with the
personal computer connected to the running PLC CPU, read the manual carefully and ensure
safety fully.
Note that program change during PLC CPU RUN (online change) may cause such problems as
program corruption depending on the operation condition. Use the equipment after fully
understanding the precautions given in the GX Developer Operating Manual.