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[Design Precautions]
!
DANGER
• For the operation status of each station at communication error in each station, refer to the
respective manual for each station.
The communication error may result in an accident due to incorrect output or malfunction.
• When using the notification function, the pager receiver may not be contacted due to the
frequency transmission status from the system setup environment and error on the receiver
side.
To ensure the safety of the programmable controller system, install a call circuit with a lamp
display or buzzer sound.
• When performing the control of the programmable controller in operation (changing data) by
connecting a peripheral devices to the CPU module or personal computer, etc. to the intelligent
device module, configure an interlock circuit in a sequence program so the safety of the overall
system is always maintained.
Also when performing other controls of the programmable controller in operation (changing
program and operation status (status control)), read this manual carefully and confirm if the
overall safety is maintained.
Especially, when this control is performed to a remote programmable controller from an external
device, troubles that have occurred on the programmable controller side may not be able to
immediately be handled if there is a data communication error.
Define a troubleshooting agreement between external devices and the programmable controller
CPU for data communication error occurrences, as well as construct an interlock circuit in the
sequence program.