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[Design Precautions]
WARNING
Failure to observe this could lead to accidents for incorrect outputs or malfunctioning.
Configure safety circuits external to the programmable controller to ensure that the entire
system operates safely even when a fault occurs in the external power supply or the
programmable controller.
Failure to do so may result in an accident due to an incorrect output or malfunction.
(1) Configure an emergency stop circuit and interlock circuit such as a positioning upper
limit/lower limit to prevent mechanical damage outside the programmable controller.
(2) The machine zero point return operation is controlled by the zero point return direction
and zero point return speed data. Deceleration starts when the near-point dog turns ON.
Thus, if the zero point return direction is incorrectly set, deceleration will not start and the
machine will continue to travel. Configure an interlock circuit to prevent mechanical
damage outside the programmable controller.
(3) When the positioning module detects an error, the motion slows down and stops or the
motion suddenly stops, depending on the stop group setting in parameter.
Set the parameters to meet the specifications of the positioning control system used.
In addition, set the OPR parameters and positioning data within the specified setting range.
When a data link results in a communication error, the operating status of the station in
communication error changes depending on the type of the used data link. Using the
communication status information, configure an interlock circuit in the sequence program to
ensure that the system will operate safely.
For the method of checking the station in communication error and its operating status at
communication error, refer to the corresponding data link manual.
[Design Precautions]
CAUTION
Do not install the control lines or communication cables together with the main circuit lines or
power cables.
Keep a distance of 100mm or more between them.
Failure to do so may result in malfunction due to noise.