Operating environment precautions
1-4
xii
countermeasure for such problems, external safety measures must be provided to
ensure safety in the system.
•
SmartSlice I/O Terminals will continue operating even if one or more I/O Units is
removed from or falls out of the SmartSlice I/O Terminal, i.e., the other I/O Units will
continue control operations, including outputs. As a countermeasure for such
problems, external safety measures must be provided to ensure safety in the
system.
!WARNING
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 Output Units, Special I/O Units, or CPU Bus Units. Any
changes to the data allocated to any Unit may result in unexpected operation of the
loads connected to the Unit. Any of the following operations 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/force-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 PLC on a network.
!Caution
Execute online editing only after confirming that no adverse effects will be caused by
extending the cycle time. Otherwise, the input signals may not be readable.
• Emergency stop circuits, interlock circuits, limit circuits, and similar safety
measures must be provided in external control circuits.
!Caution
Fail-safe measures must be taken by the customer to ensure safety in the event of
incorrect, missing, or abnormal signals caused by broken signal lines, momentary
power interruptions, or other causes. Serious accidents may result from abnormal
operation if proper measures are not provided.
!Caution
Confirm safety at the destination node before changing or transferring to another node
the contents of a program, the PLC Setup, I/O tables, I/O memory, or parameters.
Changing or transferring any of these without confirming safety may result in injury.
!Caution
Tighten the screws on the terminal block of the AC Power Supply Unit to the torque
specified in the operation manual. The loose screws may result in burning or
malfunction.
1-4
Operating environment precautions
!Caution
Do not operate the control system in the following locations:
•
Locations subject to direct sunlight.
•
Locations subject to temperatures or humidities outside the range specified in the
specifications.
•
Locations subject to condensation as the result of severe changes in temperature.
•
Locations subject to corrosive or flammable gases.
•
Locations subject to dust (especially iron dust) or salts.
•
Locations subject to exposure to water, oil, or chemicals.
•
Locations subject to shock or vibration.
!Caution
Provide proper shielding when installing the Unit in the following locations:
•
Locations subject to static electricity or other forms of electric noise.
•
Locations subject to strong electromagnetic fields.
•
Locations subject to possible exposure to radioactivity.
•
Locations close to power supplies.
Содержание CJ1W-CRM21
Страница 1: ...CJ1W PNT21 PROFINET IO Controller Unit OPERATION MANUAL Cat No W12E EN 02 ...
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Страница 26: ...Basic operating procedure Section 2 4 10 ...
Страница 46: ...Installation of Configuration Software Section 3 5 30 ...
Страница 76: ...Generic IO Device DTM Section 4 4 60 ...
Страница 151: ...135 Index The index specifies the data related to a specific subslot to be read or written acyclically ...
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Страница 170: ...Section 152 ...