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1771-DB | Allen-Bradley BASIC Module
- Regular price
- $499.00
- Sale price
- $499.00
- Regular price
-
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Product Description P/N: 1771-DB
Description
The Allen-Bradley 1771-DB is a communication module designed for PLC-5 systems, providing serial and DH-485 connectivity for industrial applications. It enables data exchange through RS-232-C, RS-422-A, RS-485, and DH-485 ports while supporting BASIC and C program execution directly on the module. With built-in processing capability and block-transfer communication, it enhances system performance by offloading tasks from the main PLC processor.
Technical Specifications
| Condition | New/Never Used Surplus |
| Category | PLC Modules |
| Subcategory | 1771 Communication Modules |
| Brand | Allen-Bradley |
| Manufacturer | Rockwell Automation |
| Part Number | 1771-DB |
| Module Type | Communication Module |
| Description | PLC BASIC Module |
| Communication Port Protocols | RS-232-C, RS-422-A, RS-485, DH-485 |
| Operation | BASIC programs and C programs |
| Communication with PLC Processor | Block-Transfer with PLC-5 processor |
| Wiring Arm | 1771-WN |
| Module Scan Time | 1.3–5 ms |
| Storage Temperature | –40 to 185 °F (–40 to 85 °C) |
| Coating | Conformal coat |
| Dimensions | 3.5 × 6.5 × 2.0 in (89 × 165 × 51 mm) |
Information About 1771-DB
The 1771-DB is a PLC BASIC communication module that integrates seamlessly into 1771 I/O chassis systems. It supports multiple serial standards, including RS-232-C, RS-422-A, RS-485, and DH-485, allowing communication with a broad range of external devices such as printers, modems, computers, and third-party controllers. Featuring onboard RAM and program execution capability, the module can perform data handling, parsing, calculation, and report generation independently of the PLC-5 processor. Its block-transfer interface ensures efficient data movement between the processor’s data table and the module’s memory, reducing programming overhead and improving system throughput.
Key Features:
- Multi-Protocol Communication: Supports RS-232-C, RS-422-A, RS-485, and DH-485 for versatile device integration.
- Independent Program Execution: Runs BASIC and C programs directly on the module to reduce PLC processor load.
- Block-Transfer Interface: Provides efficient memory exchange with PLC-5 processors for fast communication cycles.
- Battery-Backed Memory: Includes onboard RAM for storing program logic and application data during power loss.
- Isolated Communication Ports: 500 VDC isolation improves reliability and protects both module and backplane.
- Flexible Serial Connectivity: Offers separate ports for serial communication and DH-485 networking.
- Diagnostic Indicators: Built-in status LEDs simplify monitoring and troubleshooting of communication activity.
- Compact Form Factor: Occupies a single slot in the 1771 I/O chassis for simple installation.
The 1771-DB provides advanced communication and processing capabilities ideal for PLC-5 applications requiring flexible serial integration and independent data handling.
Description
The Allen-Bradley 1771-DB is a communication module designed for PLC-5 systems, providing serial and DH-485 connectivity for industrial applications. It enables data exchange through RS-232-C, RS-422-A, RS-485, and DH-485 ports while supporting BASIC and C program execution directly on the module. With built-in processing capability and block-transfer communication, it enhances system performance by offloading tasks from the main PLC processor.
Technical Specifications
| Condition | New/Never Used Surplus |
| Category | PLC Modules |
| Subcategory | 1771 Communication Modules |
| Brand | Allen-Bradley |
| Manufacturer | Rockwell Automation |
| Part Number | 1771-DB |
| Module Type | Communication Module |
| Description | PLC BASIC Module |
| Communication Port Protocols | RS-232-C, RS-422-A, RS-485, DH-485 |
| Operation | BASIC programs and C programs |
| Communication with PLC Processor | Block-Transfer with PLC-5 processor |
| Wiring Arm | 1771-WN |
| Module Scan Time | 1.3–5 ms |
| Storage Temperature | –40 to 185 °F (–40 to 85 °C) |
| Coating | Conformal coat |
| Dimensions | 3.5 × 6.5 × 2.0 in (89 × 165 × 51 mm) |
Information About 1771-DB
The 1771-DB is a PLC BASIC communication module that integrates seamlessly into 1771 I/O chassis systems. It supports multiple serial standards, including RS-232-C, RS-422-A, RS-485, and DH-485, allowing communication with a broad range of external devices such as printers, modems, computers, and third-party controllers. Featuring onboard RAM and program execution capability, the module can perform data handling, parsing, calculation, and report generation independently of the PLC-5 processor. Its block-transfer interface ensures efficient data movement between the processor’s data table and the module’s memory, reducing programming overhead and improving system throughput.
Key Features:
- Multi-Protocol Communication: Supports RS-232-C, RS-422-A, RS-485, and DH-485 for versatile device integration.
- Independent Program Execution: Runs BASIC and C programs directly on the module to reduce PLC processor load.
- Block-Transfer Interface: Provides efficient memory exchange with PLC-5 processors for fast communication cycles.
- Battery-Backed Memory: Includes onboard RAM for storing program logic and application data during power loss.
- Isolated Communication Ports: 500 VDC isolation improves reliability and protects both module and backplane.
- Flexible Serial Connectivity: Offers separate ports for serial communication and DH-485 networking.
- Diagnostic Indicators: Built-in status LEDs simplify monitoring and troubleshooting of communication activity.
- Compact Form Factor: Occupies a single slot in the 1771 I/O chassis for simple installation.
The 1771-DB provides advanced communication and processing capabilities ideal for PLC-5 applications requiring flexible serial integration and independent data handling.