Omron PROFIBUS DP GATEWAY Operation Manual page 13

Application Precautions
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• When adding a new Host Link or Compoway-F node to the network, make
sure that the PROFIBUS DP Gateway is powered down, to prevent unex-
pected results when starting up the new node.
• 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.
• Mounting or dismounting the PROFIBUS DP Gateway, 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 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.
• 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.
• Take appropriate measures to ensure that the specified power with the
rated voltage and frequency is supplied in places where the power supply
is unstable. An incorrect power supply may result in malfunction.
• Install external breakers and take other safety measures against short-cir-
cuits in external wiring. Insufficient safety measures against short-circuits
may result in burning.
• Double-check all the wiring and switch settings before turning ON the
power supply.
• When transporting or storing the product, cover the PCB's with electrically
conductive materials to prevent LSI's and IC's from being damaged by
static electricity, and also keep the product within the specified storage
temperature range.
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