The Allen-Bradley 1785-L40C15 is a robust PLC-5/40C processor designed for demanding industrial automation environments. This unit integrates a ControlNet interface directly on the processor module, enabling high-speed, deterministic communication for coordinated control of distributed I/O and drives. With 48K SRAM (battery-backed), it provides ample memory for complex logic, data tables, and recipe management. The 1785-L40C15 excels in applications requiring both local and remote I/O control, supporting up to 2048 local and 3072 remote I/O points. It features a built-in real-time clock for time-stamped data logging and event sequencing, and its modular design allows easy field replacement without disconnecting wiring. This processor is engineered for longevity and reliability, making it a trusted choice for critical processes in manufacturing, oil and gas, and power generation sectors.
| Specification |
Details |
| Model Number |
1785-L40C15 |
| Product Type |
PLC-5/40C Processor with ControlNet |
| User Memory |
48K words (SRAM, battery-backed) |
| Communication Ports |
1 x ControlNet (coaxial BNC), 1 x Serial (RS-232/422/485), 1 x DH+ |
| ControlNet Data Rate |
5 Mbps |
| Local I/O Capacity |
Up to 2048 points (discrete) or 512 analog channels |
| Remote I/O Capacity (via ControlNet) |
Up to 3072 points |
| Memory Backup |
Lithium battery (1785-BA), typical life 2-5 years |
| Real-Time Clock |
Yes, battery-backed |
| Processor Speed |
0.5 ms per 1K of Boolean logic (typical) |
| Power Supply Requirement |
+5V DC Standard Models 2.5A (from chassis backplane) |
| Operating Temperature |
0°C to 60°C (32°F to 140°F) |
| Storage Temperature |
-40°C to 85°C (-40°F to 185°F) |
| Relative Humidity |
5% to 95% (non-condensing) |
| Shock Rating |
30g peak, 11ms duration (operating) |
| Vibration Rating |
2.0g peak, 10-500 Hz (operating) |
| Chassis Compatibility |
1771-A1B, -A2B, -A3B, -A4B, -A5B (single-slot) and multi-slot chassis |
| Weight |
Approx. 1.2 kg (2.6 lbs) |
| Dimensions (H x W x D) |
12.7 cm x 5.1 cm x 17.8 cm (5.0" x 2.0" x 7.0") |
| Certifications |
UL, cUL, CE, CSA, ATEX (Zone 2) for hazardous locations |
What Does Our Clients Say
Mitsubishi MR-J4
Laura Navas
Great product!
2019/12/01
Keyence sensor
EQDR SALES
Original and fast!
2020/02/22