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| MPN | 1769-ECR |
| Product Line | CompactLogix |
| Manufacturer | Allen Bradley |
The 1769-ECR is a CompactLogix component used to terminate the communication bus. This module is installed after the last module of the chassis.
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The Allen-Bradley 1769-ECR end cap serves to terminate the communication bus, signaling end of the end point. The 1769-ECR end cap is therefore similar to a terminating resistor. The terminating resistor consumes the signals, in the form of voltages, present in the communication bus. Similarly, the 1769-ECL end cap establishes processor communication and allows the controller to identify the end of the chassis by consuming the signals present after the last module of the chassis thus, terminating the communication bus. The 1769-ECR electrostatic sensitive device as it contains electronic components installed on a PCB board housed by the component. Before installing, touch a grounded object to discharge static potential, or wear a wrist strap. Avoid touching the conductors and electronic components while in the process of insertion. Store the component in a static safe location and work on a static safe station. The Allen-Bradley 1769-ECR end cap is installed on the right side of the chassis. To the right of the PLC CPU, locate the last module of the chassis. Slide the component from the top aligned with the last module. Switch the bus lever to establish connection to the bus. If restriction is felt, verify alignment of the component and ensure each of the contacts are not deformed. Hot-swap feature is not supported by this module. Do not attempt to install and uninstall the component on a powered or functioning system. Performing this may render the system unresponsive, switch to an uncontrollable state or completely shut down. The module’s dimension is 3.35 Inches wide, 4.65 inches long and depth of 0.71 inches.
Manufacturer Part Numbers (MPNs) are often difficult to read. Here are some commonly mistaken versions for the 1769-ECR:
Manufacturers often create minor variants of products referred to as "series" or "revisions." In some cases, the revision or series of your equipment will not impact you. We are familiar and well-equipped to work with most variants of the 1769-ECR.
Variants are often specified in an unclear manner, causing some confusion over how they should be written. Here are some of the variants of the 1769-ECR that we are familiar with and several ways they may be written:
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