Mitsubishi AJ65BT-R2N, Руководство пользователя

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A-2
[Design Precautions]
DANGER
When controlling a running programmable controller (data modification) by
connecting a peripheral to a CPU module or connecting a personal computer
to an intelligent/special function module, create an interlock circuit on the
sequence program so that the whole system will operate safely all the time.
Also, before performing other controls (e.g. program modification, operating
status change (status control)), read this manual carefully and ensure the
safety.
Especially, in the control from an external device to a programmable
controller in a remote location, some programmable-controller-side problems
cannot be resolved immediately due to a data communication failure.
To prevent this, establish corrective procedures for communication failure
between the external device and the programmable controller CPU, as well
as creating an interlock circuit on the sequence program.
In the case of a data link error, the operation status of a faulty station is as
shown below. Using the communication status information, create an
interlock circuit on the sequence program for the system to operate safely.
Incorrect output or malfunction can lead to an accident.
(1) All of general-purpose inputs from this module turn OFF.
(2) All of general-purpose outputs from this module turn OFF.
Depending on the module failure, inputs and outputs may turn ON or OFF
incorrectly.
For I/O signals that may cause a serious accident, provide an external
monitoring circuit.
CAUTION
Do not bunch the control wires or communication cables with the main circuit
or power wires, or install them close to each other.
They should be installed 100 mm (3.94 inch) or more from each other.
Not doing so could result in noise that would cause erroneous operation.
Always use the data link terminal block for connection of a CC-Link dedicated
cable to a master module.
Care must be taken because, if the cable is incorrectly inserted into the
general-purpose I/O terminal block instead of the data link terminal block, the
module will break down.