Product Summary
The 1785-L11B standard processor operates as the central controller for your automation system. This PLC-5/11 module integrates local and remote I/O devices with a robust backplane current load of 2.3 Amps at 5 Volts. It provides a reliable, powerful platform for controlling complex industrial processes.
Product Procurement & Buyer Guide
This industrial controller solves key operational challenges for your facility. It handles up to 512 total I/O points in any configuration, including analog types.
The 8 Kilowords of battery-backed RAM ensure program retention during power loss. An EEPROM backup option, using modules like 1785-ME16, protects your critical logic.
The processor supports one DH+ or Remote I/O channel, which eliminates the need for separate network modules. This design simplifies system architecture and reduces overall component costs.
Integration requires a single backplane slot consuming only 2.3 Amps. This low current draw leaves ample power for other modules in your chassis, optimizing resource allocation.
Engineering teams benefit from the three-position keyswitch for RUN, PROG, and REM modes. This feature provides secure access control, preventing unauthorized program modifications during active production.
The processor scans a single rack in just 3 ms at 230.4 kbits/s. This speed guarantees rapid response to field inputs, critical for high-speed packaging or material handling lines.
It manages up to 5 I/O chassis, with 4 operating as universal remote units. This allows distributed control across large machinery, reducing complex wiring and simplifying system layouts.
Deep-Dive Technical FAQ
What is the backplane current requirement for the 1785-L11B?
The 1785-L11B draws exactly 2.3 Amps from the 5 Volt backplane supply. Always verify your chassis power supply capacity before installation.
Can I mix input and output modules for the 512 total I/O?
Yes, you can use any mix of 512 I/O points. However, using 384 inputs with 384 outputs requires duplicate addresses for each complementary pair.
Which communication protocols does the RS-232-C port support?
The channel 0 port supports ASCII and DF1 protocols. These include full-duplex, half-duplex master, and half-duplex slave modes for flexible connectivity.
What does the amber FORCE indicator signify on the front panel?
The amber FORCE indicator activates when I/O forces are enabled. This visual cue alerts operators to active force conditions, helping prevent accidental process changes.
Logistics & Standard Packaging Details
Each unit includes the 1785-L11B processor and its key-switch assembly.
The package contains a static-safe protective bag for secure transit.
A quick-reference installation guide is provided with every order.
Express delivery shipping is available via FedEx, UPS, and DHL.
These carriers ensure fast, reliable delivery to your industrial facility.
