Memory Configuration And Data Operation - Mitsubishi FX3U-20SSC-H User Manual

FX -20SSC-H Positioning Block User's Manual
3U
6.

Memory Configuration and Data Operation

DESIGN PRECAUTIONS
• Make sure to observe the following precautions in order to prevent any damage to the machinery or accidents due to abnormal data
written to the PLC under the influence of noise:
1) Do not bundle the main circuit line together with or lay it close to the main circuit, high-voltage line or load line. Otherwise, noise
disturbance and/or surge induction are likely to take place. As a guideline, lay the control line at least 100mm (3.94") or more away
from the main circuit or high-voltage lines.
2) Ground the shield wire or shield of the shielded cable at one point on the PLC. However, do not ground them at the same point as
the high-voltage lines.
• Install module so that excessive force will not be applied to the built-in programming connectors, power connectors or I/O connectors.
Failure to do so may result in wire damage/breakage or PLC failure.
STARTUP AND MAINTENANCE
PRECAUTIONS
• 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, externally cut off all phases of the power supply. 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.
• When verifying the Zero-return/JOG operation and positioning data, thoroughly read this manual to ensure safe system operation.
Failure to do so may cause an operation failure that leads to a serious accident or that causes damage to the machinery.
STARTUP AND MAINTENANCE
PRECAUTIONS
• 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.
- Display module, peripheral devices, expansion boards, and special adapters
- Terminal blocks and I/O extension units/blocks
6 Memory Configuration and Data Operation
1
2
3
4
5
6
7
8
9
10
33