Operating Environment Precautions - Omron WS02-9094G - V1.0 Operation Manual

Operating Environment Precautions

!WARNING
!WARNING
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Operating Environment Precautions

!Caution Do not operate the Unit in the following places:
!Caution The operating environment of the PLC system can have a large effect on the
The CPU Unit refreshes I/O even when the program is stopped (i.e., even in
PROGRAM mode). Confirm safety thoroughly in advance before changing the
status of any part of memory allocated to I/O Units, Special I/O Units, or CPU
Bus Units. Any changes to the data allocated to any Unit may result in unex-
pected operation of the loads connected to the Unit. Any of the following oper-
ation may result in changes to memory status.
• Transferring I/O memory data to the CPU Unit from a Programming
Device.
• Changing present values in memory from a Programming Device.
• Force-setting/-resetting bits from a Programming Device.
• Transferring I/O memory files from a Memory Card or EM file memory to
the CPU Unit.
• Transferring I/O memory from a host computer or from another PC on a
network.
Execute online edits only after confirming that no adverse effects will be
caused by extending the cycle time. Otherwise, the input signals may not be
readable.
• Locations subject to direct sunlight.
• Locations subject to temperatures or humidities outside the range speci-
fied in the specifications.
• Locations subject to condensation as the result of severe changes in tem-
perature.
• Locations subject to corrosive or flammable gases.
• Locations subject to dust (especially iron dust) or salt.
• Locations subject to exposure to water, oil, or chemicals.
• Locations subject to shock or vibration.
Provide proper shielding when installing in the following locations:
• Locations subject to static electricity or other sources of noise.
• Locations subject to strong electromagnetic fields.
• Locations subject to possible exposure to radiation.
• Locations near to power supply lines.
longevity and reliability of the system. Unsuitable operating environments can
lead to malfunction, failure and other unforeseeable problems with the PLC
system. Ensure that the operating environment is within the specified condi-
tions at installation time and remains that way during the life of the system.
Follow all installation instructions and precautions provided in the operation
manuals.
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