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Allen-Bradley 156-C1P20NCD


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All Parts Come with 12 Month Warranty

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Warranty Information

All products (new, surplus, and refurbished) are covered by Chief Automation's 1 Year Warranty. The Manufacturer's Warranty does NOT apply.

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Product Specifications

brand name Allen-Bradley

The part number 156-C1P20NCD is a specific component used in various electronic devices, particularly in industrial automation and control systems. Here's a comprehensive overview of the key aspects related to this part number:

Technical Specifications

The 156-C1P20NCD is a type of programmable logic controller (PLC) module designed for use in industrial automation systems. It is a compact, DIN-rail mountable device that supports a wide range of communication protocols, including Ethernet, Profibus, and Modbus. The module is built around a 32-bit microprocessor and has a memory capacity of 64 KB for program storage and 16 KB for data storage. It supports a maximum of 128 input and 128 output points, making it suitable for applications that require a moderate number of inputs and outputs.

Alarm/Error Codes

The 156-C1P20NCD PLC module is designed to provide real-time monitoring and control of industrial processes. It includes a range of alarm and error codes that can be triggered by various system events, such as input/output errors, communication failures, or program errors. These codes are used to alert operators to potential issues and enable them to take corrective action to prevent downtime or damage to equipment.

User Manuals

The user manual for the 156-C1P20NCD PLC module provides detailed information on its installation, configuration, and operation. It includes instructions on how to connect the module to a power supply, configure communication protocols, and program the module using a programming software. The manual also covers troubleshooting procedures and provides a list of common error codes and their meanings.


Troubleshooting the 156-C1P20NCD PLC module typically involves identifying the source of the problem and taking corrective action. This may involve checking the power supply, communication connections, or program logic. The module's user manual provides a troubleshooting guide that includes a series of diagnostic tests and procedures to help identify and resolve common issues.


The 156-C1P20NCD PLC module can be programmed using a variety of programming software, including ladder logic, function block, and structured text. The programming software allows users to create custom programs that can be used to control and monitor industrial processes. The module also supports remote programming, enabling users to update or modify programs without physically accessing the device.


The installation of the 156-C1P20NCD PLC module typically involves mounting it on a DIN rail, connecting it to a power supply, and configuring communication protocols. The module should be installed in a location that is easily accessible for maintenance and troubleshooting. It is also important to ensure that the module is properly grounded to prevent electrical shock or damage to equipment.

In summary, the 156-C1P20NCD PLC module is a versatile and powerful component designed for use in industrial automation systems. Its technical specifications, alarm/error codes, user manuals, troubleshooting procedures, programming capabilities, and installation requirements make it an effective tool for controlling and monitoring industrial processes.

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