Products Description
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Allen-Bradley 1771-SDN PLC-5 2-Channel DeviceNet Scanner Module – Technical Specifications and FAQ
Technical Specifications
| Parameter | Specification |
|---|---|
| Brand | Allen-Bradley (Rockwell Automation) |
| Model | 1771-SDN |
| Product Type | DeviceNet Scanner Module |
| Product Series | PLC-5 / 1771 I/O |
| Function | Connects PLC-5 controllers with DeviceNet field devices |
| Number of DeviceNet Channels | 2 independent channels |
| Communication Protocol | DeviceNet |
| Supported Data Rates | 125, 250, 500 kbit/s |
| Default Data Rate | 125 kbit/s |
| Default Node Address | 63 per channel |
| Communication Methods | Poll, strobe, cyclic, change-of-state and explicit messaging |
| PLC Communication | Block-transfer read and write |
| Backplane Power Consumption | 5 V DC, 0.8 A |
| DeviceNet Power Consumption | 24 V DC, 50 mA per channel, Class 2 |
| Isolation | Optical isolation between backplane and DeviceNet channels; withstands 500 V AC for 60 seconds |
| Chassis Compatibility | 1771-A1B through 1771-A4B or later compatible chassis |
| Supported Processors | PLC-2, PLC-3 and PLC-5 processors supporting block transfers |
| Wiring Connector | 10-pin linear plug, catalog number 1787-PLUG10R |
| Wiring Cable | 1771-CD |
| Slot Requirement | 1 slot |
| Operating Temperature | 0 to 60°C |
| Storage Temperature | -40 to 85°C |
| Relative Humidity | 5–95%, non-condensing |
| Dimensions (H × W × D) | 270 × 30 × 170 mm (manufacturer documentation) |
| Weight | Approx. 0.9 kg |
| Country of Origin | Multiple manufacturing locations; verify product nameplate |
| Lifecycle Status | Discontinued |
FAQ
FAQ
Q1: What is the Allen-Bradley 1771-SDN used for?
A: It is a DeviceNet scanner module that connects PLC-5 controllers with DeviceNet-compatible field devices, allowing data exchange and remote I/O control.
Q2: How many DeviceNet channels does the 1771-SDN support?
A: It supports two independent DeviceNet communication channels.
Q3: What communication speeds does the 1771-SDN support?
A: It supports 125, 250 and 500 kbit/s. The default communication speed is 125 kbit/s.
Q4: Which PLC processors are compatible with the 1771-SDN?
A: It supports PLC-2, PLC-3 and PLC-5 processors that provide block-transfer read and write capabilities.
Q5: Which chassis are compatible with the 1771-SDN?
A: It is designed for compatible 1771 I/O chassis, including 1771-A1B through 1771-A4B.
Q6: Does the 1771-SDN provide electrical isolation?
A: Yes. It uses optical isolation between the backplane and DeviceNet communication channels, tested to withstand 500 V AC for 60 seconds.
Q7: What are the dimensions and weight of the 1771-SDN?
A: The documented dimensions are approximately 270 × 30 × 170 mm (H × W × D), and the weight is approximately 0.9 kg, excluding packaging.
Q8: Is the 1771-SDN still available?
A: The 1771-SDN is discontinued by Rockwell Automation. Surplus, refurbished and remaining-stock units may still be available from industrial automation suppliers.
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Packing & Delivery
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