Features:
- Packaged control: the processor, supply, and discrete field points share one controller assembly
- Two communication roles: EtherNet/IP and RS-232 serve different parts of the installed architecture
- Digital-only identity: the QB1B configuration remains distinct from the mixed-I/O QBFC1B catalog
1769-L23E-QB1B is easiest to recognize as an earlier packaged CompactLogix design built around local discrete machine signals.
Its serial interface can be as important as the Ethernet connection when maintenance depends on an established device protocol or cable.
The complete QB1B suffix should remain visible in every quotation because the related QBFC1B package carries a different embedded-channel configuration.
Apter Power can coordinate official-document review, quotation, and procurement support for 1769-L23E-QB1B.
Allen-Bradley 1769-L23E-QB1B CompactLogix 5370 Packaged Digital I/O Controller Manuals, Datasheets, Links
Important Notice: Other accessories, manuals, cables, calibration data, software, etc. are not included with this equipment unless listed in the above stock item description. All prices are shown in USD.
- Interface role: use the embedded RS-232 channel only for the supported DF1 or ASCII arrangement.
- Cable record: retain the approved connector, pinout, and device-side wiring reference.
- Message definition: preserve baud, framing, addressing, and controller logic as one communication record.
- Change boundary: introduce a gateway only when its protocol behavior is officially supported and functionally tested.
- Module limit: the packaged controller supports no more than three following Compact I/O modules.
- Bus demand: total the 5 V and 24 V requirements of every retained module before installation.
- Module order: preserve the approved sequence and distance-rating requirements in the local bank.
- Project match: keep catalog numbers and slot definitions aligned with the physical extension.
- Application copy: retain the last approved project and the software version used to maintain it.
- Controller record: capture series, firmware, operating mode, and current fault history.
- Network identity: preserve the Ethernet address and connected-device paths outside the program file.
- Restore proof: test a controlled download and representative I/O before a production outage.
- Packaged discrete control: execute local logic with embedded 24 V DC input and sourcing-output channels.
- EtherNet/IP data exchange: connect the controller to supported networked automation devices.
- Serial equipment: maintain a documented DF1 or ASCII device path through the RS-232 interface.
- Local I/O extension: add a limited Compact I/O bank when the published module and power boundaries are met.