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[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.

[Design Instructions]
!

CAUTION
• Be sure to read the manual careful and exercise an appropriate amount of caution connecting to
PLC CPU and performing online operations (PLC CPU program change during RUN, forced
input/output operation, RUN-STOP or other operation condition changes, remote control
operation) while the personal computer is operating.
Regarding the PLC CPU program change during RUN (Write during RUN), the program may be
corrupted or have other problems depending on oper ation conditions. Exercise the appropriate
amount of caution with regard to the Caution points in