Omron SYSMAC CJ - REFERENCE MANUAL 08-2008 Reference Manual page 35

Application Precautions
!WARNING
!Caution Failure to abide by the following precautions could lead to faulty operation of
A Programming Console can, however, be used to edit multitask pro-
grams originally created with the CX-Programmer.
Always heed these precautions. Failure to abide by the following precautions
could lead to serious or possibly fatal injury.
• Always connect to a ground of 100
connecting to a ground of 100
• A ground of 100 or less must be installed when shorting the GR and LG
terminals on the Power Supply Unit.
• Always turn OFF the power supply to the PLC before attempting any of
the following. Not turning OFF the power supply may result in malfunction
or electric shock.
• Mounting or dismounting Power Supply Units, I/O Units, CPU Units, In-
ner Boards, or any other Units.
• Assembling the Units.
• Setting DIP switches or rotary switches.
• Connecting cables or wiring the system.
• Connecting or disconnecting the connectors.
the PLC or the system, or could damage the PLC or PLC Units. Always heed
these precautions.
• The user program and parameter area data in the CS1-H, CS1D, CJ1-H,
and CJ1M CPU Units are backed up in the built-in flash memory. The
BKUP indicator will light on the front of the CPU Unit when the backup
operation is in progress. Do not turn OFF the power supply to the CPU
Unit when the BKUP indicator is lit. The data will not be backed up if
power is turned OFF.
• When using a CS-series CS1 CPU Unit for the first time, install the
CS1W-BAT1 Battery provided with the Unit and clear all memory areas
from a Programming Device before starting to program. When using the
internal clock, turn ON power after installing the battery and set the clock
from a Programming Device or using the DATE(735) instruction. The clock
will not start until the time has been set.
• When the CPU Unit is shipped from the factory, the PLC Setup is set so
that the CPU Unit will start in the operating mode set on the Programming
Console mode switch. When a Programming Console is not connected, a
CS-series CS1 CPU Unit will start in PROGRAM mode, but a CS1-H,
CS1D, CJ1, CJ1-H, or CJ1M CPU Unit will start in RUN mode and opera-
tion will begin immediately. Do not advertently or inadvertently allow oper-
ation to start without confirming that it is safe.
• When creating an AUTOEXEC.IOM file from a Programming Device (a
Programming Console or the CX-Programmer) to automatically transfer
data at startup, set the first write address to D20000 and be sure that the
size of data written does not exceed the size of the DM Area. When the
data file is read from the Memory Card at startup, data will be written in
the CPU Unit starting at D20000 even if another address was set when
the AUTOEXEC.IOM file was created. Also, if the DM Area is exceeded
(which is possible when the CX-Programmer is used), the remaining data
will be written to the EM Area.
or less when installing the Units. Not
or less may result in electric shock.
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