OVERVIEW

Official designation: Allen-Bradley 1788-CNF (1788 Linking Devices, Fiber-Optic ControlNet Card)

Role/Application: This fiber-optic communication daughtercard links FlexLogix/DriveLogix controllers to the ControlNet network. It supports high-speed data exchange for I/O control and messaging on single-channel fiber media.

KEY SPECS SUMMARY

Power: 5V DC @ 440 mA max via backplane

Interfaces / Ports: One fiber-optic channel A and B ports

Indicators: Network Access Port (NAP), Network Status LEDs

Operating Temp: 0 degrees C to 60 degrees C

Platform / Compatibility: FlexLogix/DriveLogix controllers, ControlNet

Limit: Maximum isolation voltage is 500 Volts DC

Lifecycle: Discontinued by manufacturer, replacement is N/A

FREQUENTLY ASKED QUESTIONS

Technical Specifications:

Q: What are the nominal power consumption and heat dissipation ratings for the 1788-CNF module?

A: Nominal power consumption is 2.2 W, with a heat dissipation of 7.51 BTU per hour.

Wiring & Installation:

Q: What is the recommended type of cable to be used with the fiber-optic ports on the 1788-CNF?

A: The card requires the use of fiber-optic cable media, such as plastic or glass fiber.

Troubleshooting & Compatibility:

Q: What is the significance of the card losing its keeper configuration with older firmware versions?

A: Losing keeper configuration on power or network disturbances was corrected in firmware revision 1.8.

Replacement & Upgrades:

Q: Which software is required to configure ControlNet communication parameters for the daughtercard?

A: RSLogix 5000 and RSLinx software are required to define the network configuration and driver.