xvi
Application Precautions
5
5
Application Precautions
Observe the following precautions when using the DeviceNet PCI Board.
• Install failsafe safety mechanisms to provide safety in the event of incor-
rect signals that may result from signal line disconnections or power inter-
ruptions.
• Always use the power supply voltage specified in this manual.
• Mount the Board only after checking the connectors and terminal blocks
completely.
• 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.
• Always connect to a ground of 100
Ω
or less when installing. Not connect-
ing to a ground of 100
Ω
or less may result in electric shock.
• Install external breakers and take other safety measures against short-cir-
cuiting in external wiring. Insufficient safety measures against short-cir-
cuiting may result in burning.
• Always turn OFF the power supply to the computer or slave before
attempting any of the following. Not turning OFF the power supply may
result in malfunction or electric shock.
• Mounting or dismounting DeviceNet PCI Board.
• Setting rotary switches.
• Assembling the Boards.
• Connecting cables or wiring the system.
• Connecting or disconnecting the connectors.
• Do not attempt to disassemble, repair, or modify any product.
• Be sure that all the board mounting screws, cable screws, and cable con-
nector screws are tightened to the torque specified in the relevant manu-
als. Incorrect tightening torque may result in malfunction.
• Use crimp terminals for wiring. Do not connect bare stranded wires
directly to terminals.
• Double-check all the wiring and switch settings before turning ON the
power supply.
• Wire all connections correctly.
• Observe the following precautions when wiring the 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.
• Place communications cables in ducts.
• Use the specified communications cables.
• Always wire communications and signal lines within the specified con-
nection distances.
• Before touching the Board, be sure to first touch a grounded metallic
object in order to discharge any static built-up. Not doing so may result in
malfunction or damage.
Summary of Contents for DeviceNet 3G8F7-DRM21-E
Page 1: ...OPERATION MANUAL Cat No W381 E1 02 3G8F7 DRM21 E DeviceNet PCI Board ...
Page 2: ...3G8F7 DRM21 E DeviceNet PCI Board Operation Manual Revised July 2005 ...
Page 3: ...iv ...
Page 5: ...vi ...
Page 29: ...12 Preparation for Operation Section 1 8 ...
Page 67: ...50 PC Watchdog Timer Management Function Section 3 11 ...
Page 115: ...98 Maintenance API Functions Section 4 7 ...
Page 131: ...114 Remote I O Communications Characteristics Section 6 1 ...
Page 145: ...Index 128 ...
Page 147: ...130 Revision History ...