Product Discription
The Allen-Bradley 1785-L20C15 is a PLC-5 Controller. 1785-L20C15 is one of ControlNet PLC-5 programmable controllers’ sub-series. This sub-series is part of the enhanced programmable controllers PLC-5 series. The 1785-L20C15 merges I/O modules including local, extended, and remote devices on various type of communication interfaces into one coherent control system suited for various process control challenges. 1785-L20C15 easily integrates into the ControlNet phase 1.5 communication network due to the integrated ControlNet phase 1.5 communication interface. 1785-L20C15 shares specifications and functionality with other members of PLC-5/20 series of programmable controllers. 1785-L20C15 has one built-in port dedicated for Data Highway Plus (DH+) communication interface. That port is marked as channel 1A. Besides that, the 1785-L20C15 has one port that can be configured both as DH+ or Remote I/O (adapter or scanner). This port is marked as channel 1B. DH+ communication can be used both for remote programming and monitoring of 1785-L20C15 and for creating a peer-to-peer communication network between the various 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.
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