Why the 1769-L23E-QBFC1B Fits Small Machines
When a skid, pump panel, or small process line needs real control without a full rack build, the Allen-Bradley 1769-L23E-QBFC1B is a practical answer. This CompactLogix packaged controller from Rockwell Automation combines a power supply, embedded I/O, and communications in one compact unit. It belongs to the 5370 L2 CompactLogix family and handles measurement, control, and monitoring tasks out of the box.

Embedded I/O That Cuts Panel Build Time
The 1769-L23E-QBFC1B ships with Sixteen (16) 24 VDC discrete inputs, Sixteen (16) 24 VDC discrete outputs, Four (4) analog inputs, and Two (2) analog outputs. Four (4) high-speed counters are also embedded, similar in function to the 1769-HSC module. That mix lets you wire sensors, valves, drives, and fast pulse devices directly to the controller. You save terminal blocks, wiring time, and enclosure space on every build.
User memory totals 512 KB, backed by battery-supported RAM through the 1769-BA battery. The controller also includes an end cap for terminating the local I/O bus. LED indicators show output channel status plus operating mode and battery condition, so technicians can read machine state at a glance.
Communications and Integration
One Ethernet port and One (1) RS232 port cover most small-system networking needs. The Ethernet port runs at 10/100 Mbps and supports EtherNet/IP through a built-in RJ45 socket. It accepts Eight (8) TCP connections and Thirty-Two (32) CIP connections, which is enough for a programming workstation, an HMI, and a data collection link at the same time.
The RS232 port is fully isolated and suits point-to-point links up to 15 meters. It supports DF1 and ASCII protocols, so it can talk to legacy devices, barcode readers, and similar equipment. Supported protocols are Serial: DF1; ASCII and Ethernet: TCP I/P; CIP. For DeviceNet, add a 1769-SDN scanner module. If you plan to wire into a plant network, confirm cables and any gateway needs with your supplier before commissioning.

Applications and Expansion
Up to Two (2) 1769 I/O modules can be added when the embedded channels run short. Peripheral devices such as Point I/O modules, PowerFlex 40 drives, and PanelView Plus 600 terminals integrate well with this platform. Typical duties include wellhead control, compressor monitoring, batching, and packaging lines where a compact footprint matters. The controller mounts on a standard DIN rail or fastens with screws through the provided mounting tabs.
Practical Selection Advice
Before ordering, confirm your channel count, protocol needs, and whether DeviceNet or extra 1769 modules are required. The 1769-L23E-QBFC1B suits engineers who want embedded control plus Ethernet/IP connectivity in one unit. Please verify current lifecycle status and availability with Oil AutoTech before ordering. Contact Oil AutoTech today for pricing and availability.
