Omron SYSMAC CS1 Operation Manual page 16

Application Precautions
DATE(735) instruction. The clock will not start until the time has been set. (The
Battery is installed in advance for CS1PC-PCI01H-DRM, so clock does not
need to be set.)
• The user program and parameter area data in CS1PC-PCI01H-DRM is
backed up in the built-in flash memory. The BKUP indicator will light on the front
panel when the backup operation is in progress. Do not turn OFF the power
supply to the SYSMAC CS1 Board when the BKUP indicator is lit. The data will
not be backed up if power is turned OFF.
• If, when using a CS1PC-PCI01H-DRM, the PLC Setup is set to specify using
the mode set on the Programming Console and a Programming Console is not
connected, the CPU Unit will start in RUN mode. This is the default setting in
the PLC Setup. (A CS1PC-PCI01-DRM will start in PROGRAM mode under
the same conditions.)
• When creating an AUTOEXEC.IOM file from a Programming Device (a Pro-
gramming 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 CS1 Board 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-Pro-
grammer is used), the remaining data will be written to the EM Area.
• Always turn ON power to the SYSMAC CS1 Board before turning ON power to
the control system. If the SYSMAC CS1 Board power supply is turned ON after
the control power supply, temporary errors may result in control system signals
because the output terminals on DC Output Units and other Units will momen-
tarily turn ON when power is turned ON to the SYSMAC CS1 Board.
• Interlock circuits, limit circuits, and similar safety measures in external circuits
(i.e., not in the Programmable Controller) must be provided by the customer.
• Do not turn OFF the power supply to the SYSMAC CS1 Board when data is
being transferred. In particular, do not turn OFF the power supply when read-
ing or writing a Memory Card. Also, do not remove the Memory Card when the
BUSY indicator is lit. To remove a Memory Card, first press the memory card
power supply switch and then wait for the BUSY indicator to go out before re-
moving the Memory Card.
• If the I/O Hold Bit is turned ON, the outputs from the PLC will not be turned OFF
and will maintain their previous status when the PLC is switched from RUN or
MONITOR mode to PROGRAM mode. Make sure that the external loads will
not produce dangerous conditions when this occurs. (When operation stops
for a fatal error, including those produced with the FALS(007) instruction, all
outputs from Output Unit will be turned OFF and only the internal output status
will be maintained.)
• The contents of the DM, EM, and HR Areas in the SYSMAC CS1 Board are
backed up by a Battery. If the Battery voltage drops, this data may be lost. Pro-
vide countermeasures in the program using the Battery Error Flag (A40204) to
re-initialize data or take other actions if the Battery voltage drops.
• Do not apply a force greater than 100 N on the terminal block when tightening
the terminals.
• Install Units as far as possible away from devices that generate strong, high-
frequency noise.
• Wire all connections correctly.
• Do not drop the product or subject it to excessive vibration or shock.
• Mount Units only after checking terminal blocks and connectors completely.
• Check switch settings, the contents of the DM Area, and other preparations
before starting operation. Starting operation without the proper settings or data
may result in an unexpected operation.
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