!

DANGER
• When performing data changes or status control from the peripheral device to the running PLC,
configure up an interlock circuit outside the PLC system to ensure that the whole system will
operate safely.
In addition, predetermine corrective actions for the system so that you can take measures
against any communication error caused by a cable connection fault or the like in online
operations performed from the peripheral device to the PLC.
!

CAUTION
• Read the manual carefully before performing the online operations (especially forced output and
operating status change) which will be executed with the peripheral device connected to the
running CPU module.
Not doing so can damage the machine or cause an accident due to misoperation.