Description

The Allen‑Bradley 2080‑DNET20 is a DeviceNet scanner plug‑in module purpose‑built for the Micro800 series of programmable logic controllers, specifically the Micro850 and Micro870 models -6-7. As a compact, snap‑in communication module, it equips the entry‑level Micro800 controller with full DeviceNet slave capability, enabling it to participate in larger, distributed automation networks -6. The module functions as both a scanner and a client for explicit messaging, effectively managing communication with up to 20 remote nodes—including PowerFlex AC drives, CompactBlock LDX I/O, and E1Plus overloads—without expanding the controller’s physical footprint -7-9-12.

 

Application Scenarios

Consider a food processing plant with an older conveyor system that relies on a DeviceNet network to connect weigh stations, barcode readers, and variable‑speed drives. When the plant upgrades its central control, it introduces a new Micro850 PLC but faces a dilemma: the new controller does not natively speak DeviceNet, and replacing the entire field device network is prohibitively expensive. The 2080‑DNET20 offers an elegant solution—it snaps into the Micro850’s plug‑in slot, instantly enabling the controller to communicate seamlessly with every existing DeviceNet node -6. The module independently handles network polling and data packaging, offloading these tasks from the main CPU and allowing the PLC to focus on logic execution -2. This approach saved the plant tens of thousands of dollars compared to replacing all legacy DeviceNet devices with EtherNet/IP equivalents.

In a water treatment facility, the 2080‑DNET20 enables centralized monitoring of remote pump stations. Older drives and valves running on DeviceNet are smoothly integrated with new Micro800 controllers that handle local logic, while the 2080‑DNET20 ensures real‑time data exchange across the network -6. Operators gain visibility into distributed assets without overhauling the existing communication backbone, and the module’s compact, plug‑in design eliminates the need for bulky external gateways or adapter racks.

 

Parameter

Main Parameters	Value/Description
Product Model	2080‑DNET20
Manufacturer	Allen‑Bradley / Rockwell Automation
Product Category	DeviceNet Communication Scanner Module
Compatibility	Micro850, Micro870 controllers with plug‑in slots -6
Max Number of Nodes	20 nodes for I/O operations -1-9
DeviceNet Baud Rates	125 Kbps (up to 420m), 250 Kbps (up to 200m), 500 Kbps (up to 75m) -1-9
Power Consumption	1.44 W max; backplane 50mA @ 24V DC -1-9
DeviceNet Power Draw	24V DC, 300mA (Class 2) -1
Isolation Voltage	50V continuous (tested at 500V AC for 60s) -1
Status Indicators	Module Status (red/green), Network Status (red/green) -1
Operating Temperature	‑20°C to +65°C -1
Dimensions (H x W x D)	62 x 31.5 x 20 mm -1
Weight	35 g