1771-DMC | Allen-Bradley PLC-5 Control Coprocessor Main Module 256KB

Allen-Bradley · PLCs & Industrial Controllers

1771-DMC | Allen-Bradley PLC-5 Control Coprocessor Main Module 256KB

Description  The Allen-Bradley 1771-DMC is a PLC-5 Control Coprocessor Main Module equipped with 256 KB of onboard memory. It extends the processing capabilities of PLC-5 systems by enabling execution of user-developed programs written in C, BASIC, or Assembler, and offers advanced serial communication options for custom application integration.     Technical Specifications  Condition New/Never Used Surplus Brand Allen-Bradley Category PLCs/Machine Control Part Number 1771-DMC Subcategory PLC Module/Rack Series PLC-5 Module Type Control Coprocessor Main Module Memory 256 KB Supported Languages C, BASIC, Assembler Communication Ports 1× 9-pin RS-232C, 1× 25-pin RS-232C/RS-423/RS-485 Mounting 1771 I/O Chassis Slot Applications Custom logic execution, protocol conversion, diagnostics Weight 1.98 lbs       Information About 1771-DMC The 1771-DMC is a control coprocessor module designed for Allen-Bradley's PLC-5 programmable controller systems. With 256 Kbytes of memory, this main module functions as an intelligent companion to the CPU, executing custom programs independently to offload processing tasks. It supports high-level languages like C and BASIC as well as assembly language, which makes it suitable for developing custom control logic, protocol converters, or complex calculations. The module includes two communication ports: one 9-pin EIA RS-232C and one 25-pin configurable for RS-232C, RS-423, or RS-485, providing flexible serial connectivity with peripheral devices, operator interfaces, or other control equipment. This robust module enhances the versatility and computational power of PLC-5 systems without requiring additional external processors. Key Features: 256 KB Coprocessor Memory: Offers expanded memory for executing custom applications written in C, BASIC, or Assembler. Dual Serial Ports: Includes (1) 9-pin RS-232C and (1) 25-pin configurable RS-232C/RS-423/RS-485 port for connecting to external devices. Independent Processing: Runs user-defined tasks parallel to the main PLC CPU, improving system performance and flexibility. Language Support: Enables application development using multiple programming languages to handle complex or specialized functions. Protocol Conversion: Can be programmed to interface with third-party devices using custom or legacy communication protocols. Integration with PLC-5: Seamlessly fits into PLC-5 systems, providing additional computing capacity without disrupting core logic. DIN Slot Mountable: Fits directly into standard Allen-Bradley 1771 I/O chassis alongside other PLC-5 modules. Versatile Communication: Supports point-to-point, multidrop, and peer-to-peer serial network configurations. Enhanced Application Control: Suitable for custom HMI drivers, data logging, machine diagnostics, and algorithm execution. Industrial Grade Reliability: Built to meet Allen-Bradley’s standards for continuous operation in automation environments. The 1771-DMC boosts the computational power and flexibility of PLC-5 systems by enabling custom, standalone processing functions that support specialized industrial control applications.

Brand: Allen-Bradley · Category: PLCs & Industrial Controllers

Key features

Specifications

Manufacturer part number1771-DMC
ConditionNew/Never Used Surplus
BrandAllen-Bradley
CategoryPLCs/Machine Control
Part Number1771-DMC
SubcategoryPLC Module/Rack
SeriesPLC-5
Module TypeControl Coprocessor Main Module
Memory256 KB
Supported LanguagesC, BASIC, Assembler
Communication Ports1× 9-pin RS-232C, 1× 25-pin RS-232C/RS-423/RS-485
Mounting1771 I/O Chassis Slot
ApplicationsCustom logic execution, protocol conversion, diagnostics
Weight1.98 lbs
Product typePLC Module/Rack

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