The 1785-L46C15 is a powerful PLC-5/46C ControlNet processor with protected memory. This module controls up to 2048 forcible I/O points with high scanning speed. It manages 48 kilowords of user memory using battery-backed SRAM. Professionals rely on this unit for demanding automation tasks.
Expert Technical Evaluation & Performance Review
Engineers value the 48 kilowords of protected memory for secure program execution. The processor restricts data-table files to a 32K word limit. This architecture prevents memory fragmentation in complex sequences. The unit forces I/O with 2048 channels for input or output. It also supports up to 48000 nonforcible analog I/O points. This capability suits large-scale process control systems.
The 1785-L46C15 provides a ControlNet port operating at 5 Mbit/s. It supports up to 99 nodes per link with repeaters. The average I/O scan time over ControlNet is 0.5 ms per rack. For universal remote I/O, the scan time ranges from 3 ms to 10 ms. These speeds enable real-time control of fast-moving machinery.
The processor draws 3.3 A backplane current at 5 V DC. It dissipates a maximum of 59 BTU/hour during operation. This thermal performance allows installation in densely packed enclosures. The unit operates from 0°C to 60°C with 5–95% non-condensing humidity. It withstands 30G shock and 1G vibration at 10–500 Hz. These specifications guarantee reliable performance in harsh factory floors.
The 1785-L46C15 features two front panel 3-pin ports for DH+ or remote I/O. It also includes one RS-232-C/422-A/423-A port and one coprocessor port. This connectivity allows seamless integration with legacy and modern networks. The module supports the 1785-CHBM ControlNet Hot Backup Cartridge for system redundancy. It also works with 1771, 1794, 1746, and 1791 I/O modules. Users can configure addressing as half-slot, single-slot, or double-slot.
Procurement managers appreciate the robust design and wide compatibility. The unit supports 125 total I/O chassis and 60 universal remote chassis. Its protected memory prevents unauthorized program changes. This model meets UL, CE, CSA, and C-TICK certifications. The 1785-L46C15 delivers proven reliability for twenty-four-seven operations.
Logistics & Standard Packaging Details
Express delivery shipping is available via FedEx, UPS, and DHL.
