Omron CJ - INSTRUCTIONS REFERENCE MANUAL 07-2009 Reference Manual page 30

!Caution Fail-safe measures must be taken by the customer to ensure safety in the
!Caution Execute online edit only after confirming that no adverse effects will be
!Caution Confirm safety at the destination node before transferring a program to
!Caution The CJ2 CPU Units automatically back up the user program and parameter
!Caution Tighten the screws on the terminal block of the AC Power Supply Unit to the
!Caution Do not touch the Power Supply Unit when power is being supplied or immedi-
!Caution Be careful when connecting personal computers or other peripheral devices
CS/CJ/NSJ Series Instructions Reference Manual (W474)
event of incorrect, missing, or abnormal signals caused by broken signal lines,
momentary power interruptions, or other causes. Serious accidents may
result from abnormal operation if proper measures are not provided.
caused by extending the cycle time. Otherwise, the input signals may not be
readable.
another node or changing contents of the I/O memory area. Doing either of
these without confirming safety may result in injury.
data to flash memory when these are written to the CPU Unit. I/O memory
(including the DM, EM, and HR Areas), however, is not written to flash mem-
ory. The DM, EM, and HR Areas can be held during power interruptions with a
battery. If there is a battery error, the contents of these areas may not be
accurate after a power interruption. If the contents of the DM, EM, and HR
Areas are used to control external outputs, prevent inappropriate outputs from
being made whenever the Battery Error Flag (A402.04) is ON.
torque specified in the operation manual. The loose screws may result in
burning or malfunction.
ately after the power supply is turned OFF. The Power Supply Unit will be hot
and you may be burned.
to a PLC to which is mounted a non-insulated Unit (CS1W-CLK12/52(-V1) or
CS1W-ETN01) connected to an external power supply. A short-circuit will be
created if the 24 V side of the external power supply is grounded and the 0 V
side of the peripheral device is grounded. When connecting a peripheral
device to this type of PLC, either ground the 0 V side of the external power
supply or do not ground the external power supply at all.
PRECAUTIONS
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