Allen Bradley 1785-L20C15/F（Allen Bradley Machine Control） Specification
| Manufacturer | Rockwell Automation |
| Brand | Allen-Bradley |
| Part Number | 1785-L20C15 |
| Max User Memory | 16 Kilowords |
| Max I/O Chassis Total | 77 |
| Max I/O Chassis Extended Local | 0 |
| Max I/O Chassis Universal Remote | 12 |
Key Feature of Allen Bradley 1785-L20C15/F（Allen Bradley Machine Control）
1
High-Speed ControlNet Communication
1785-L20C15/F Control Enables high-speed, deterministic data exchange through a dedicated ControlNet port, ensuring real-time communication between the controller, I/O modules, HMIs, and other automation devices to meet demanding application requirements.
2
Redundant Media Options
1785-L20C15/F Control Supports redundant communication media configurations (e.g., dual cables). In case of a primary path failure, the system automatically and seamlessly switches to the backup, significantly enhancing network reliability for continuous process applications.
3
Hot Backup Functionality
1785-L20C15/F Control Provides hot backup capability where a standby controller immediately takes over control tasks if the primary controller fails, eliminating downtime and ensuring high availability for critical processes.
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Allen Bradley 1785-L20C15/F（Allen Bradley Machine Control） Image And Details
The Allen-Bradley 1785-L20C15（Allen Bradley Machine Control） is a PLC-5 Controller. Allen Bradley 1785-L20C15/F is one of ControlNet PLC-5 programmable controllers’ sub-series. This sub-series is part of the enhanced programmable controllers PLC-5 series. The Allen Bradley 1785-L20C15/F 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/F Machine Control easily integrates into the ControlNet phase 1.5 communication network due to the integrated ControlNet phase 1.5 communication interface. 1785-L20C15/F Machine Control shares specifications and functionality with other members of PLC-5/20 series of programmable controllers. 1785-L20C15/F Machine Control 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/F Machine Control 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/F Machine Control and for creating a peer-to-peer communication network between the various PLC-5 controllers. 1785-L20C15/F Control Remote I/O connection is used for real-time data exchange between the controller and I/O, operator interface, and other devices. |  |
Other Modules
| 128031-01C 128031-01 | 330101-30-63-15-02-CN |
| 330904-05-14-05-02-00 | 330104-00-04-50-11-00 |
| 330104-00-15-10-02-00 | 330104-00-12-10-02-00 |
| PR9268/200-000 | KJ4001X1-BE1 12P0818X072 |
| PR6424/000-030 CON021 | PR6423/010-010 CON021 |
| PR6423/00R-101 CON031 | PR6423/013-020 CON021 |
| KJ3222X1-BA1 12P2532X122 VE4033S2B1 | KJ3203X1-BA2 13P0085X012 |
| KJ3241X1-BA1 12P2506X042 | KJ3221X1-BA2 13P0125X012 |
| KJ4001X1-CA1 12P0623X062 | KJ3201X1-BA1 12P2535X052 VE4001S2T2B2 |
| KJ3002X1-BG2 12P1731X082 | KJ2201X1-BA1 12P3162X122 SLS1508 |
| KJ3221X1-BA1 12P2531X082 VE4003S2B2 | KJ3203X1-BA2 13P0085X012 VE4001S2T2B4 |
| 1785-L20C15/F Control | KJ3223X1-BA1 12P2871X022 VE4003S2B6 |
| KJ2201X1-HA1 12P3322X022 | KJ3001X1-BG1 12P0557X162 VE4002S1T1B1 |
| PR6423/002-030 CON021 | KJ2003X1-BA2 12P2093X112 VE3005 |
| PR6423/00R-010 CON021 | PR9268/301-000 |
| KJ3221X1-BA1 12P2531X102 | A6740-10 |
| KJ3222X1-BA1 12P2532X072 | 1785-L20C15/F Control |
| KJ2003X1-BB1 12P3439X012 | KJ2101X1-BA 12P2690X012 |
| KJ3241X1-BA1 12P2506X042 VE4006P2 | 12P0631X012 |
| KJ3102X1-BA1 12P1863X032 | KJ1501X1-BB1 12P0678X032 |
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