6 Memory Configuration and Data Operation
35
FX
3U
-20SSC-H Positioning Block User's Manual
1
Int
roduct
ion
2
Sy
stem
conf
igur
ati
on
3
Exam
ple
C
onnect
ion
4
Ins
tall
a
tion
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Wi
rin
g
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Me
m
o
ry
confi
gur
at
ion
and da
ta
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Befor
e
star
ting
positi
oning
contr
o
l
8
M
anual c
ont
ro
l
9
Posit
ioni
ng
C
ont
rol
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Table O
per
at
ion
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 port, input connectors, power connectors or
optical 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, 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.
•
Before operating the Zero-return/JOG or testing of the positioning data, 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.
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 representative.
•
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
-
Extension units/blocks and FX Series terminal blocks