Allen-Bradley 1788-CNC ControlNet Communication Module
The 1788-CNC is a ControlNet communication module belonging to the Allen-Bradley 1788 Linking Devices series, designed specifically for FlexLogix controller architectures. Operating at a rated voltage of 5 VDC with a current draw of 450 mA, this module supports up to 32 logical connections over a standard coaxial physical layer. It provides deterministic, real-time data exchange for demanding industrial control and distributed I/O applications.
Network Interface and Connection Capacity
Equipped with a single coaxial media interface, the 1788-CNC enables reliable communication across ControlNet networks. It handles up to 32 active connections, allowing the host controller to manage scheduled peer-to-peer messaging, controller programming, and I/O data updates without compromising network determinism.
Environmental and Installation Limits
Engineered for cabinet mounting within controlled industrial environments, the module operates within a temperature range of 0 deg C to 40 deg C and tolerates non-condensing relative humidity levels up to 80%. It is rated for installations at altitudes up to 1000 meters above sea level.
| Parameter | Specification |
|---|---|
| Model | 1788-CNC |
| Brand | Allen-Bradley |
| Product Type | Communication Module |
| Product Line | 1788 Linking Devices |
| Operating Voltage | 5 VDC |
| Rated Draw Current | 450 mA |
| Number of Connections | 32 Connections |
| Media Type | Coaxial |
| Module Type | FlexLogix ControlNet Communication Module |
| Operating Temperature Range | 0 deg C to 40 deg C |
| Operating Humidity | 80% (Non-Condensing) |
| Installation Altitude | 1000 MSL |
| Weight | 0.56 lbs (0.26 kg) |
Frequently Asked Questions
Q: What is the primary difference between the 1788-CNC and the 1788-CNCR? A: The 1788-CNC utilizes a single coaxial media connection, whereas the 1788-CNCR features dual coaxial BNC connectors to support media redundancy.
Q: Can the 1788-CNC module be hot-swapped while the rack is powered? A: No, system power and backplane power should be turned off before inserting or removing the module to prevent electrical damage to the communication circuitry.
Allen-Bradley 1788-CNC ControlNet Communication Module
Allen-Bradley 1788-CNC ControlNet Communication Module
The 1788-CNC is a ControlNet communication module belonging to the Allen-Bradley 1788 Linking Devices series, designed specifically for FlexLogix controller architectures. Operating at a rated voltage of 5 VDC with a current draw of 450 mA, this module supports up to 32 logical connections over a standard coaxial physical layer. It provides deterministic, real-time data exchange for demanding industrial control and distributed I/O applications.
Network Interface and Connection Capacity
Equipped with a single coaxial media interface, the 1788-CNC enables reliable communication across ControlNet networks. It handles up to 32 active connections, allowing the host controller to manage scheduled peer-to-peer messaging, controller programming, and I/O data updates without compromising network determinism.
Environmental and Installation Limits
Engineered for cabinet mounting within controlled industrial environments, the module operates within a temperature range of 0 deg C to 40 deg C and tolerates non-condensing relative humidity levels up to 80%. It is rated for installations at altitudes up to 1000 meters above sea level.
| Parameter | Specification |
|---|---|
| Model | 1788-CNC |
| Brand | Allen-Bradley |
| Product Type | Communication Module |
| Product Line | 1788 Linking Devices |
| Operating Voltage | 5 VDC |
| Rated Draw Current | 450 mA |
| Number of Connections | 32 Connections |
| Media Type | Coaxial |
| Module Type | FlexLogix ControlNet Communication Module |
| Operating Temperature Range | 0 deg C to 40 deg C |
| Operating Humidity | 80% (Non-Condensing) |
| Installation Altitude | 1000 MSL |
| Weight | 0.56 lbs (0.26 kg) |
Frequently Asked Questions
Q: What is the primary difference between the 1788-CNC and the 1788-CNCR? A: The 1788-CNC utilizes a single coaxial media connection, whereas the 1788-CNCR features dual coaxial BNC connectors to support media redundancy.
Q: Can the 1788-CNC module be hot-swapped while the rack is powered? A: No, system power and backplane power should be turned off before inserting or removing the module to prevent electrical damage to the communication circuitry.
