[DESIGN PRECAUTIONS]
DANGER
z If a communication fails in data link, the faulty station holds the data link data
generated before the communication error. Create an interlock circuit in the
sequence program using the communication status information in order that
the system will operate safely.
Check the faulty station and the operation status during communication error
by referring to the relevant manuals.
z Some failures of cable or communication unit may cause the GOT to keep
the outputs on or off.
Create an external circuit for monitoring output signals that may lead to
serious accidents.
Failure to do so may cause mis-outputs or malfunctions, resulting in
accidents.