1785-L30B 1785L30B Allen Bradley AB Processor Module 2.3AMP AT 5VDC 2 DH+/REMOTE I/O CHANNELS

1771-KX1 1771KX1 Allen Bradley AB PLC 5 Communication Interface Module

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Product Details

Programmable controller 1785-L30B is the main part of each enhanced control system based on the Allen Bradley PLC-5 series. The 1785-L30B merges local, extended and remote I/O modules on various types of communication interfaces into one control system suited for various processes. 1785-L30B has two built-in ports. Ports are marked as channel 1A and channel 1B, and both can function as remote I/O scanners, remote I/O adapters and DH+ communication interfaces. DH+ communication can work both for remote programming and monitoring of 1785-L30B, and for creating a peer-to-peer communication network between the other PLC-5 controllers.

Remote I/O connection is used for real-time data exchange between the controller and I/O, operator interface, and other devices. On the front panel of the 1785-L30B controller, there is a 25-pin connector marked channel 0. This is an optically isolated EIA RS232C port. Channel 0 supports ASCII and DF1 full and half-duplex master protocols and half-duplex slave protocols. On the front panel, there is a green channel 0 communication indicator light. Near channel 0, there is an 8-pin mini-DIN connector marked as channel 1A, and a DH+ programming terminal connection parallel to it. There are two three-pin connectors that serve as communication ports.

These three pin connectors are used for channels 1A and 1B, which can be configured as remote I/O scanners, remote I/O adapters or DH+ communication ports. Both channel 1A and channel 1B on 1785-L30B can function as remote I/O scanners or remote I/O adapter communications. Remote I/O Scanner Mode reads and writes I/O information between a controller and remote I/O device. In this mode, 1785-L30B is a supervisory controller for other controllers that are in adapter mode and remote I/O adapter modules.

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