<h2>Overview</h2>
<p>The <strong>Allen-Bradley 1756-DNB</strong> Series E is a dedicated DeviceNet communication module designed for ControlLogix controllers. This bridge/scanner module facilitates seamless integration between ControlLogix processors and DeviceNet-compatible field devices, including sensors, actuators, motor starters, drives, and distributed I/O systems. <strong>The 1756-DNB</strong> occupies a single slot in any ControlLogix chassis and provides reliable, deterministic communication for demanding industrial automation applications.</p>
<h2>Key Features</h2>
<ul>
<li><strong>64 DeviceNet Nodes:</strong> Supports up to 64 addressable nodes (00–63) for large-scale distributed device networks</li>
<li><strong>Selectable Baud Rates:</strong> 125 Kbps (500 m), 250 Kbps (250 m), or 500 Kbps (100 m) with automatic detection</li>
<li><strong>Single DeviceNet Port:</strong> One 5-pin male Phoenix connector with scanner and slave capability</li>
<li><strong>Advanced Diagnostics:</strong> Supports ADR (Address Resolution) and explicit messaging for comprehensive device management</li>
<li><strong>USB Programming Port:</strong> 12 Mbps USB interface for local configuration via RSNetWorx for DeviceNet</li>
<li><strong>RIUP Support:</strong> Removal and Insertion Under Power (disconnect DeviceNet connector first)</li>
</ul>
<h2>Technical Specifications</h2>
<ul>
<li><strong>Power Consumption:</strong> 580 mA @ 5 VDC backplane; 3 mA @ 24 VDC</li>
<li><strong>Power Dissipation:</strong> 5.8 W maximum</li>
<li><strong>Operating Temperature:</strong> 0–60 °C</li>
<li><strong>Insulation Voltage:</strong> 30 V continuous</li>
<li><strong>Communication Protocol:</strong> DeviceNet (Common Industrial Protocol / CIP)</li>
<li><strong>Connections:</strong> 1 × 5-pin Male Phoenix Connector (DeviceNet), 1 × USB Type A (configuration)</li>
<li><strong>Slot Requirement:</strong> Single ControlLogix chassis slot</li>
</ul>
<h2>Typical Applications</h2>
<p>The 1756-DNB is ideal for manufacturing, process automation, and discrete control systems requiring DeviceNet communication:</p>
<ul>
<li>Motor starter and soft-start control networks</li>
<li>Variable frequency drive (VFD) integration and coordination</li>
<li>Distributed sensor and actuator control</li>
<li>Remote I/O and safety-compliant device scanning</li>
<li>Multi-device production line orchestration</li>
<li>Hazardous area automation (Class I, Division 2)</li>
</ul>
<h2>Compatibility & Replacements</h2>
<h3>Compatible With</h3>
<ul>
<li>ControlLogix 5580, 5570, 5560, 5555, 5550, 5500 processors</li>
<li>ControlLogix 1756 chassis (single-slot module for any slot)</li>
<li>DeviceNet-enabled field devices (sensors, drives, starters, I/O modules)</li>
<li>DeviceNet networks with 64-node maximum configuration</li>
</ul>
<h3>Replaces / Drop-In Replacement For</h3>
<ul>
<li>Verify compatibility with your system integrator before ordering. Consult Rockwell Automation technical documentation for upgrade paths.</li>
</ul>
<h3>Works With</h3>
<ul>
<li><strong>Software:</strong> Studio 5000 Logix Designer, RSNetWorx for DeviceNet, EtherNet/IP diagnostic tools</li>
<li><strong>Protocols:</strong> DeviceNet (CIP), Common Industrial Protocol, explicit messaging, ADR</li>
<li><strong>Certifications:</strong> UL Listed (E65584), CSA Certified (LR54689C), Class I Division 2 (Group A,B,C,D), CE Low Voltage / ATEX compliant</li>
</ul>
