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Safety Precautions
(Read these precautions before use.)
3. STARTUP AND MAINTENANCE PRECAUTIONS
4. DISPOSAL PRECAUTIONS
5. TRANSPORTATION PRECAUTIONS
Reference
• Do not touch any terminal while the PLC's power is on.
Doing so may cause electric shock or malfunctions.
• Before cleaning or retightening terminals, cut off all phases of the power supply externally.
Failure to do so may cause electric shock.
• Before modifying or disrupting the program in operation or running the PLC, carefully read through
this manual and the associated manuals and ensure the safety of the operation.
An operation error may damage the machinery or cause accidents.
B-5
B-81
Reference
• Do not disassemble or modify the PLC.
Doing so may cause fire, equipment failures, or malfunctions.
For repair, contact your local Mitsubishi Electric distributor.
• Turn off the power to the PLC before connecting or disconnecting any extension cable.
Failure to do so may cause equipment failures or malfunctions.
• Turn off the power to the PLC before attaching or detaching the following devices.
Failure to do so may cause equipment failures or malfunctions.
- Peripheral devices, expansion boards, and special adapters
- Input/output extension units/blocks and FX Series terminal blocks
B-5
B-81
Reference
• Please contact a certified electronic waste disposal company for the environmentally safe
recycling and disposal of your device.
B-16
Reference
• Before transporting the PLC, turn on the power to the PLC to check that the BATT LED is off.
If the PLC is transported with the BATT LED on or the battery exhausted, the battery-backed data
may be unstable during transportation.
• The PLC is a precision instrument. During transportation, avoid impacts larger than those specified
in the general specifications of the PLC main unit manual. Failure to do so may cause failures in
the PLC. After transportation, verify the operations of the PLC.
B-16