KEYENCE DL-RS1A/IL - Manual (Page 2)

Introduction
This manual provides an overview of the RS-232C communication unit DL-RS1A and describes the
functions and procedures of the unit.
Be sure to read this manual carefully to ensure safe performance and function of the unit.
Keep this manual in a safe place for future reference.
Ensure that this manual is passed to the end user.
Symbols
The following symbols alert you to important messages. Be sure to read these messages carefully.
It indicates cautions and limitations that must be followed during operation.
It indicates additional information on proper operation.
It indicates tips for better understanding or useful information.
It indicates a hazardous situation which, if not avoided, will result in death or
serious injury.
It indicates a hazardous situation which, if not avoided, could result in death
or serious injury.
It indicates a hazardous situation which, if not avoided, could result in minor
or moderate injury.
It indicates a situation which, if not avoided, could result in product damage
as well as property damage.
DANGER
WARNING
CAUTION
NOTICE
Important
Point
Reference
Safety Precautions
General Cautions
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Handling Errors
Operating Precautions
„ Installation environment
To use the DL-RS1A correctly and safely, avoid installing it in the following locations. Failure to do so to
may cause fire, electric shock, and malfunction.
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„ Noise countermeasures
Isolate the unit from devices that generate high frequency electrical signals, power supply lines, or
power lines. Otherwise, noise could cause a malfunction.
Turn off the power immediately in the following cases. Using the unit in
abnormal conditions could cause fire, electric shock, or accident. Contact the
nearest KEYENCE office for repair.
• If fluids including water, chemicals, or debris enter the unit
• If the unit is dropped or the case is damaged
• If abnormal smoke or odor is present
NOTICE
• Do not use the DL-RS1A with a voltage other than specified voltage, as this
may cause fire, electric shock or equipment failure.
• Do not disassemble or modify the DL-RS1A. Doing so may cause fire or
electric shock.
• Be sure to turn off the power to the DL-RS1A and any connected devices before
connecting or disconnecting the cables. Failure to do so may damage the unit.
• Do not turn off the power while setting a parameter. Otherwise, the settings
may be partially or completely lost.
WARNING
NOTICE