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- Allen Bradley
- 1734-ADN/B
- DeviceNet Network Adaptor
- USA
- 133.4 × 54.9 × 76.2 mm
- 0.26 kg
- Xiamen, China
- New & In Stock
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Product Overview
The Allen Bradley 1734-ADN/B POINT I/O DeviceNet Network Adaptor is a communication interface used to connect a POINT I/O station to a DeviceNet network.
In a distributed automation system, I/O modules are often installed close to sensors, actuators, and machine equipment rather than inside the main controller cabinet. The network adaptor provides the communication path between those local POINT I/O modules and the DeviceNet control network.
A typical installation might place a group of digital and analog I/O modules near a conveyor, packaging machine, or process skid. Field signals are connected to the POINT I/O modules, while the 1734-ADN/B handles communication between the local I/O assembly and the DeviceNet network.
This arrangement reduces the amount of individual field wiring that needs to return to the main control cabinet and makes it easier to distribute I/O around a machine or production area.
Technical Specifications
| Parameter | Details |
|---|---|
| Manufacturer | Allen Bradley |
| Model | 1734-ADN/B |
| Product Type | POINT I/O DeviceNet Network Adaptor |
| Series | POINT I/O |
| Network | DeviceNet |
| Main Function | Network Communication for POINT I/O |
| System Role | I/O Network Adaptor |
| Application | Distributed I/O Systems |
| Typical Use | Connecting POINT I/O to DeviceNet |
| Dimensions | 133.4 × 54.9 × 76.2 mm |
| Weight | 0.26 kg |
Product Features
The 1734-ADN/B forms the communication link between a POINT I/O station and the DeviceNet network.
Key characteristics include:
- POINT I/O network adaptor architecture
- DeviceNet network connectivity
- Intended for distributed I/O installations
- Supports communication between POINT I/O modules and the control network
- Suitable for machine-level I/O distribution
- Can be installed with compatible POINT I/O modules
- Useful for remote sensor and actuator interfaces
- Suitable for industrial automation cabinets and field stations
- Dimensions of 133.4 × 54.9 × 76.2 mm
- Stated weight of 0.26 kg
The adaptor should be considered together with the POINT I/O modules, DeviceNet network, power arrangement, and controller when planning or troubleshooting the station.
Working Principle
A typical POINT I/O DeviceNet arrangement can be represented as:
PLC / DeviceNet Scanner → DeviceNet Network → 1734-ADN/B → POINT I/O Modules → Field Devices
The controller communicates with the remote I/O station through DeviceNet. The 1734-ADN/B receives the network information and manages the communication between the network and the compatible POINT I/O modules installed at the station.
For example, a machine may have several proximity sensors and solenoid valves located away from the main control cabinet. Instead of running separate signal wiring for every device back to the PLC, the field devices can connect to local POINT I/O modules. The 1734-ADN/B then provides the network connection between this local I/O group and the controller.
During troubleshooting, this makes the adaptor a useful dividing point. If the controller cannot communicate with an entire POINT I/O station, the DeviceNet connection, adaptor, station power, and module assembly should be checked before investigating individual I/O channels.
Industrial Applications
The 1734-ADN/B is suited to applications where POINT I/O modules need to be distributed over a DeviceNet network.
| Application | Typical Use |
|---|---|
| Packaging Machinery | Distributed sensor and actuator I/O |
| Conveyor Systems | Remote machine signals |
| Material Handling | Distributed digital and analog I/O |
| Assembly Equipment | Local machine I/O |
| Production Lines | Remote I/O stations |
| Machine Control | Device-level field interfaces |
| Process Equipment | Distributed monitoring and control |
| Industrial Automation | Networked POINT I/O systems |
The final configuration depends on the controller, DeviceNet network architecture, POINT I/O modules, and field devices connected to the station.
Compatible System Components
The 1734-ADN/B normally operates as part of a complete POINT I/O and DeviceNet system.
| Component | Function |
|---|---|
| 1734-ADN/B | Connects the POINT I/O station to DeviceNet |
| POINT I/O Modules | Interface with field signals |
| DeviceNet Scanner / Controller Interface | Exchanges I/O data with the network |
| PLC | Executes control logic |
| DeviceNet Network | Carries communication between controller and I/O |
| Field Sensors | Provide machine or process input signals |
| Actuators | Receive output commands |
| I/O Power Supply | Supplies the applicable station power |
| Network Cabling | Carries DeviceNet communication |
| Terminal / Wiring Components | Connect field devices |
The adaptor is only one part of the communication path. A problem in the network cable, node configuration, power supply, or I/O assembly can also interrupt communication.
Installation and Maintenance
The 1734-ADN/B should be installed as part of the POINT I/O station and DeviceNet network arrangement. Correct node configuration, network wiring, power distribution, and module seating are important during commissioning.
Recommended checks include:
- Confirm the complete 1734-ADN/B part number.
- Verify the DeviceNet network arrangement.
- Check the adaptor’s physical installation.
- Confirm compatible POINT I/O modules.
- Inspect module seating and connections.
- Check DeviceNet wiring.
- Inspect network connectors for loose contacts.
- Verify network power and station power.
- Check node configuration and addressing.
- Inspect for damaged cables or connectors.
- Check the surrounding I/O modules if communication is interrupted.
- Verify controller-side DeviceNet communication.
- Perform controlled I/O testing after replacement.
If an entire POINT I/O station disappears from the controller, start with the common communication path. The adaptor, network wiring, power supply, and DeviceNet configuration should be examined before replacing individual I/O modules.
Recommended Related Models
For the 1734-ADN/B, related components should be selected according to the required network architecture and POINT I/O station configuration.
| Model / Component | Type | Primary Function | Application |
|---|---|---|---|
| Allen Bradley 1734-ADN/B | DeviceNet Network Adaptor | POINT I/O network communication | DeviceNet I/O systems |
| Allen Bradley POINT I/O Modules | I/O Hardware | Field signal interfacing | Distributed automation |
| Allen Bradley POINT I/O Terminal Bases | Base Hardware | Module mounting and wiring interface | POINT I/O stations |
| Allen Bradley DeviceNet Scanner | Network Interface | Controller-side DeviceNet communication | PLC networks |
| Allen Bradley PLC Controllers | Controller | Machine and process control | Industrial automation |
| DeviceNet Network Components | Network Hardware | Network communication | Distributed I/O |
When replacing a 1734-ADN/B, verify the DeviceNet architecture, node configuration, compatible POINT I/O modules, station power, network wiring, and controller interface.
Key Advantages
- DeviceNet network interface for POINT I/O
- Supports distributed I/O architecture
- Suitable for remote machine I/O
- Connects POINT I/O modules to the DeviceNet network
- Helps reduce individual field wiring to the main controller
- Suitable for industrial automation systems
- Compatible with POINT I/O station configurations
- Dimensions of 133.4 × 54.9 × 76.2 mm
- Stated weight of 0.26 kg
Technical FAQs
What is the function of the Allen Bradley 1734-ADN/B?
The 1734-ADN/B acts as a DeviceNet network adaptor for a POINT I/O station, allowing compatible POINT I/O modules to exchange I/O data with the DeviceNet control network.
What should be checked if an entire POINT I/O station stops communicating?
Check the 1734-ADN/B, DeviceNet cabling, network connections, station power, node configuration, and controller-side DeviceNet interface. When all modules in one station are affected, the shared network path should be investigated first.
Can the 1734-ADN/B be evaluated separately from the POINT I/O modules?
It can be diagnosed separately, but its operation depends on the complete I/O station. Module compatibility, terminal bases, power distribution, and network configuration all need to be considered when commissioning or replacing the adaptor.
Why is the DeviceNet network connection important to a remote POINT I/O station?
The network connection carries the I/O data between the distributed station and the controller. A problem in the DeviceNet path can therefore make multiple otherwise functional I/O modules unavailable to the control system.