User guide
1
DeviceNet Compatible Network Unit
DL-DN1
Instruction Manual
Read this manual before use.
Keep this manual in a safe place for future reference.
 Symbols
The following symbols alert you to matters concerning the prevention of injury and product 
damage. 
The listed system names and product names, etc., are the trademarks or registered 
trademarks of the respect companies.
Safety Precautions
 General Precautions
• Before and while operating this product, confirm that it provides its functions and 
performance correctly.
• Implement sufficient safety measures to prevent human and physical damages in case this 
product fails.
• Be aware that the product functions and performance are not warranted if the product is 
used outside the range of stated specifications or is modified by the customer.
• Combining this product with other equipment requires sufficient consideration because the 
proper functions and performance may not be provided depending on the environment.
• Do not expose equipment, including peripherals, to rapid temperature changes. Equipment 
failure may result from condensation build up.
• Do not use this product for the purpose to protect a human body or a part of human body.
• This product is not intended for use as explosion-proof product. Do not use this product in 
hazardous location and/or potentially explosive atmosphere.
Precautions for Use 
 Equipment Environment
For safe, trouble-free operation of this product, the product must not be installed in the 
following locations:
• Humid, dusty, or poorly ventilated.
• Exposed to direct sunlight or heating source.
• Exposed to corrosive or flammable gases.
• Exposed directly to vibration or shock.
• Exposed to water, oil, or chemical splashes.
• Exposed to static electricity.
 Noise Protection
If this product is installed in a location near a noise source, e.g, power source or high-voltage 
line, it may malfunction or fail because of noise. Use protective measures, such as using a 
noise filter or running the cables separately.
Precautions on Regulations and Standards
UL Certificate
This product is an UL/C-UL Listed product.
• UL File No. E207185
• Category NRAQ, NRAQ7
Be sure to consider the following specifications when using this product as an UL/C-UL Listed 
Product.
• Use a power supply with Class 2 output defined in NFPA70 (NEC: National Electrical Code).
• For wiring to the DeviceNet connector, use the AWG 12-24 copper wire with temperature 
rating 60°C or more.
• Use this product under pollution degree 2
• This product is an open type device. Therefore, it must be installed in an enclosure with IP 
54 or higher. (e.g. Industrial control panel)
CE Marking
Keyence Corporation has confirmed that this product complies with the essential requirements 
of the applicable EC Directive, based on the following specifications.
Be sure to consider the following specifications when using this product in the Member State of 
European Union.
EMC Directive
EMI : EN55011, Class A
EMS : EN61000-6-2
Remarks
KEYENCE does not give any guarantee that the end-product with this product incorporated 
complies with the essential requirements of EMC Directive. The manufacturer of the 
end-product is solely responsible for the compliance on the end-product itself according to 
EMC Directive.
Outline
The DL-DN1 operates as a slave unit of DeviceNet communication. Using DeviceNet 
communications, the sensor amplifiers and other units connected to the DL-DN1 can transmit 
their ON/OFF control signals and measured values as communication data to PLC or other 
equipment.
The DL-DN1 supports I/O communication (poll) and Explicit Messaging. I/O communication 
enables data communication without the need of a ladder program. Explicit Messaging allows 
for reading/writing sensor amplifier parameters and to issue commands to the sensor 
amplifiers.
Types and Number of Connectable Sensor Amplifiers
The DL-DN1 can connect a maximum of 15 sensor amplifiers (main units and expansion units) 
which support D-bus. ("D-bus" is the name of KEYENCE's wiring-saving system for sensor 
amplifiers.).
Different types of sensor amplifiers with D-bus support can be connected to a single DL-DN1 
unit
The number of connectable units, and a mixed environment of different models, depend on the 
particular sensor amplifiers or units. Refer to the users manual or the instruction manual of your 
units.
Checking the Package Contents
Before using the DL-DN1, make sure that the following equipment and accessories are 
included in the package.
We have thoroughly inspected the package contents before shipment. However, in the event of 
defective or broken items, contact your nearest KEYENCE office.
 Package contents
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.
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.
• To avoid injury or failure, turn off the power immediately in the 
following cases.
-Water or foreign matter entered the main unit.
-The case is broken, for example if it is dropped.
-Smoke or unusual smell is emitted from the product.
• Use the correct power voltage. Failure to observe may result in 
injury, or failure.
• Do not disassemble or modify this product. Failure to observe may 
result in injury.
Do not turn off the power while you are setting any item.
Doing this may cause loss of data settings.
DANGER
WARNING
CAUTION
NOTICE
Important
Point
Reference
CAUTION
NOTICE
• DL-DN1 main unit x1 • DeviceNet connector x1 • End unit x2
• Expansion connector 
sticker x
1
• Instruction manual x
1
96M11275




