Mitsubishi Electric A1SJ71DN91 User Manual page 3

When using Mitsubishi equipment, thoroughly read this manual and the associated manuals introduced in this manual.
Also pay careful attention to safety and handle the module properly.
These precautions apply only to Mitsubishi equipment. Refer to the CPU module user's manual for a description of the
PC system safety precautions.
These SAFETY PRECAUTIONS
Procedures which may lead to a dangerous condition and cause death or serious injury if not
DANGER
carried out properly.
Procedures which may lead to a dangerous condition and cause superficial to medium injury,
CAUTION
or physical damage only, if not carried out properly.
Depending on circumstances, procedures indicated by
In any case, it is important to follow the directions for usage.
Store this manual in a safe place so that you can take it out and read it whenever necessary.
Always forward it to the end user.
[System Design Precautions]
•
If a communication error occurs in the network of the DeviceNet, the communication error station enters the state
shown below.
(1) The master station (AJ71DN91, A1SJ71DN91) holds the data that was input from a slave station before the
occurrence of a communication error.
(2) Whether the output signal of the slave station goes OFF or is retained depends on the slave station
specifications or the parameter setting at the master station.
Create the interlock circuit on a sequence program which uses the communication state of the slave stations so that
the system operation is secured. At the same time, a safety system must be provided outside the slave station.
•
Do not bundle control lines or communication wires together with main circuit or power lines, or lay them close to
these lines.
As a guide, separate these lines by a distance of at least 100 mm, otherwise malfunctions may occur due to noise.
• •
SAFETY PRECAUTIONS
(Read these precautions before using.)
classify the safety precautions into two categories: "DANGER" and "CAUTION".
CAUTION may also be linked to serious results.
DANGER
CAUTION
• •