Omron CS1W-DRM21, CJ1W-DRM21 operation manual Application Precautions

Application Precautions		5
		The operating environment of the PC System can have a large effect on the
		longevity and reliability of the system. Improper operating environments can
		lead to malfunction, failure, and other unforeseeable problems with the PC
		System. Be sure that the operating environment is within the specified condi-
		tions at installation and remains within the specified conditions during the life
		of the system.
5	Application Precautions
	!Caution	Observe the following precautions when using the DeviceNet Unit.
		Failure to abide by the following precautions could lead to serious or possibly
		fatal injury. Always heed these precautions.
	!WARNING	ifications.
		• Always connect to a class-3 ground (100 Ω or less) when installing the
		Units.
	!Caution	Failure to abide by the following precautions could lead to faulty operation or
		the PC or the system or could damage the PC or PC Units. Always heed
		these precautions.
		• Install double safety mechanisms to ensure safety against incorrect sig-
		nals that may be produced by broken signal lines or momentary power
		interruptions.
		• Enable the scan list to before operating the system.
		• When adding a new node to the network, make sure that the baud rate is
		the same as other nodes.
		• Use specified communications cables.
		• Do not extend connection distances beyond the ranges given in the spec-
		• Always turn OFF the power supply to the personal computer, Slaves, and
		Communications Units before attempting any of the following.
		• Mounting or dismounting the DeviceNet Unit, Power Supply Units, I/O
		Units, CPU Units, or any other Units.
		• Assembling a Unit.
		• Setting DIP switches or rotary switches.

• Connecting or wiring the cables.

• Connecting or disconnecting connectors.

• Be sure that the terminal blocks, connectors, Memory Units, expansion cables, and other items with locking devices are properly locked into place. Improper locking may result in malfunction.

• Be sure that all the mounting screws, terminal screws, Unit mounting screws, and cable connector screws are tightened to the torque specified in the relevant manuals. Incorrect tightening torque may result in malfunc- tion.

• Leave the label attached to the Unit when wiring. Removing the label may result in malfunction if foreign matter enters the Unit.

• Remove the label after the completion of wiring to ensure proper heat dis- sipation. Leaving the label attached may result in malfunction.

• Always use the power supply voltage specified in this manual.

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