xviii
Application Precautions
5
5
Application Precautions
Observe the following precautions when using the DeviceNet Configurator.
!WARNING
Failure to abide by the following precautions could lead to serious or possibly
fatal injury. Always heed these precautions.
• 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 PLC or the system or could damage the PLC or PLC Units. Always heed
these precautions.
• 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-
ifications.
• Always turn OFF the power supply to the personal computer, Slaves, and
Communications Units before attempting any of the following.
• Attaching or detaching the DeviceNet Board or Card.
• Assembling the Units.
• Setting rotary switches.
• Connecting or wiring the cables.
• Connecting or disconnecting connectors.
• Be sure that the communications cables and other items with locking
devices are properly locked into place.
• Be sure that all Board mounting screws, connector screws, and cable
screws are tightened to the torque specified in this manual.
• Always use the power supply voltage specified in this manual.
• Double-check all the wiring and connection of terminal blocks and con-
nectors before mounting the Units.
• Use crimp terminals for wiring. Do not connect bare stranded wires
directly to terminals.
• Observe the following precautions when wiring the communications
cable.
• Separate the communications cables from the power lines or high-ten-
sion lines.
• Do not bend the communications cables.
• Do not pull on the communications cables.
• Do not place heavy objects on top of the communications cables.
• Be sure to wire communications cable inside ducts.
• Use appropriate communications cables.
• Before touching the PCI Board, be sure to first touch a grounded metallic
object in order to discharge any static build-up. Not doing so may result in
malfunction or damage.
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