Configured for ControlNet to DeviceNet network linking in industrial communication architectures, the Allen-Bradley 1788-CN2DN (1788-CN2DN Interface Module) provides direct physical/electrical execution between connected network segments.

Model Identification

The 1788-CN2DN is a ControlNet communication adapter designed to provide a connection path between ControlNet and DeviceNet networks. The module includes dedicated connectors and termination accessories required for field installation.

Hardware Specifications

EtherNet/IP and Industrial Network Compatibility

Allen-Bradley industrial communication modules require correct network topology planning, node addressing, and cable installation practices. For ControlNet and DeviceNet environments, physical layer conditions directly affect communication performance.

The 1788-CN2DN operates as a protocol interface device between ControlNet and DeviceNet segments. Proper cable shielding, termination resistor placement, and grounding practices must be maintained to reduce communication interference.

Ordering Information

The package configuration for the 1788-CN2DN includes:

• 1 x Allen-Bradley 1788-CN2DN Interface Module
• 1 x Power input connector
• 1 x DeviceNet 10-pin linear connector
• 2 x 121 ohm termination resistors
• 2 x End anchors

Field Installation Guidelines

Mounting Requirements

• Install the module in a location with sufficient airflow around the enclosure.
• Secure all connectors before applying power.
• Verify that mounting hardware does not place mechanical stress on communication cables.

Network Wiring

• Use compatible ControlNet and DeviceNet cabling according to system design requirements.
• Maintain cable separation from high voltage power conductors.
• Connect cable shields according to industrial grounding practices.

Power Connection

• Verify the 24 VDC supply polarity before energizing the module.
• Inspect terminal connections for correct mechanical tightness.
• Disconnect power before removing communication connections.

Frequently Asked Questions

• What is the primary function of the 1788-CN2DN?

The module provides a communication interface between ControlNet and DeviceNet networks for data exchange between connected automation devices.

• Does the 1788-CN2DN require a 24 VDC power supply?

Yes. The supplied specifications identify a 24 VDC input requirement for module operation.

• What connectors are included with this module?

The module includes a power input connector and a DeviceNet 10-pin linear connector according to the supplied product information.

• Can the module operate without termination resistors?

The supplied configuration includes 121 ohm resistors. Proper termination is required for DeviceNet network signal integrity.

• Is the 1788-CN2DN a digital I/O module?

No. It is a communication interface module used for network linking between ControlNet and DeviceNet.

• Does the module support direct connection between ControlNet and DeviceNet?

Yes. The module is designed specifically as a linking device between these two industrial communication networks.

• What installation checks should be completed before startup?

Verify wiring, power polarity, connector seating, termination components, and network cable installation before operation.

• Is firmware compatibility required for system integration?

Control system firmware and network configuration compatibility should be verified according to the connected Allen-Bradley platform requirements.