三菱 手冊 三菱-手冊_IB80030I
資料介紹：
N PRECAUTIONS]
DANGER
z Some failures of the GOT main uni t, communication module, communication
board or cable may keep the outputs on or off.
An external monitoring circuit should be provided to check for output signals
which may lead to a serious accident.
Not doing so can cause an accident due to false output or malfunction.
z If a communication fault (including cable disconnection) occurs during
monitoring on the GOT, communication between the GOT and PLC CPU is
suspended and the GOT bec omes inoperative.
For bus connection: The CPU becomes faulty and the GOT inoperative.
For other than bus connection: The GOT becomes inoperative.
A system where the GOT is used should be configured to perform any
significant operation to the system by using the switches of a device other
than the GOT on the assumption that a GOT communication fault will
occur.
Not doing so can cause an accident due to false output or
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