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1771-KD

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The 1771-KD Communication Interface Module is manufactured by Allen-Bradley/Rockwell Automation in the PLC 2 series. This module interfaces the Data Highway Module with other intelligent RS-232-C compatible devices and it can be used as a replacement for the 1771-KC and 1771-KE communication processor modules.

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Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All our products come with DO Supply's 2-year warranty.

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Technical specifications for 1771-KD

Brand	Allen-Bradley / Rockwell Automation
Series	PLC 5
Part Number	1771-KD
Lower Connector Keyband Position	Between Pins 6 and 8
Upper Connector Keyband Position	Between Pins 10 and 14
Cycle Redundancy Check	16-bit CRC
Module Type	Communication Interface Module
Bulletin	1771
Alternative Parts	1771-KC/KE
Power Supply	5V DC at 1.2 A
Communication	RS-232-C, DH
Indicator	LEDs

Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

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The 1771-KD Interface Module is a Communication Interface Module that has been manufactured by Allen-Bradley/Rockwell Automation as part of the Allen-Bradley PLC 2 series. This module interfaces the Data Highway Module with other intelligent RS-232-C compatible devices and it can also be used as a replacement for the 1771-KC and the 1771-KE communication processor modules. Longline, direct, or modern connections can be used on this module to connect to various RS-232-C devices based on the distance from the module. The 1771-KD module can also serve as a slave interface between the SCADA master device and the Data Highway network. It has DH and RS-232-C communication ports with a baud rate of up to 19.2 kilobytes per second. The module features a maximum power supply rating of 5 Volts DC at 1.2 Amps of current and it obtains a power supply from the rack it is mounted on.

The Allen-Bradley 1771-KD Module requires one slot for installation in the 1771 I/O chassis, and it must also be mounted within 100 feet of the DH cable. For proper installation, the key band positions should be between pins 6 and 8 for the lower connector and between pins 10 and 14 for the upper connector. The 1771-KD Communication Interface Module comes with 6 switch assemblies for choosing various communication options. The 1770-CP modern interface cable, 1770-CD data highway drop-line cable, or the 1770-CG data terminal interface cable are used for wiring. This module comes with 5 LED indicators on the front for diagnosis and troubleshooting. For safety, there is a 16-bit Cycle Redundancy Check (CRC) on the DH link and a 16-bit CRC on the RS-232-C link or 8-bit Block Check Character (BCC) or a for message transmission over the Data Highway network.