Overview
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1769-L23E-QB1B |
| Spare Model | 1769L23EQB1B |
| Brand | Allen-Bradley |
| Product Series | CompactLogix |
| Product Type | Ethernet/IP Processor with Integrated I/O |
| Product Parameters | CMPLX 512KB Enet DI/O Controller |
| Memory | 512 KB |
| Ethernet Communication | Ethernet/IP |
| Serial Interface | 1 x RS-232 port |
| Digital Inputs | 16 channels, 24 VDC |
| Digital Outputs | 16 channels, 24 VDC |
| Analog Inputs | 4 channels |
| Analog Outputs | 2 channels |
| High-Speed Inputs | 6 channels |
| High-Speed Outputs | 4 channels |
| Bus Current at 24 VDC | 710 mA |
| Status Indicators | Included |
| Weight | 0.9 kg |
| Estimated Shipping Dimensions | 18.5 x 13.2 x 8.6 cm |
Integrated I/O and Communication
The integrated I/O configuration allows the controller to process digital states and analog signals within a single unit. The 16 digital inputs and 16 digital outputs support discrete signal handling, while the four analog inputs and two analog outputs provide analog signal interfaces. The specific analog ranges and resolution are not confirmed in the supplied data.
Ethernet/IP provides the network communication interface, and the RS-232 port supports serial communication. The 512 KB memory specification identifies the controller’s listed memory capacity. Verify application memory requirements and communication settings against the existing control system before selecting a replacement.
Product Status and Selection Considerations
The supplied information identifies September 30, 2016, as the manufacturer’s discontinuation date. This status matters when planning maintenance, sourcing replacement hardware, or evaluating long-term spare-part availability. Confirm the exact catalog number and hardware configuration before purchasing, particularly when replacing a controller in an existing installation.
Frequently Asked Questions
Q: Is the 1769-L23E-QB1B discontinued?
A: Yes. The supplied product information lists September 30, 2016, as the manufacturer’s discontinuation date. Confirm current stock and condition with the seller before ordering.
Q: Which communication interfaces does this controller provide?
A: The listed interfaces are Ethernet/IP and one RS-232 port. Confirm the required network configuration and serial communication settings for the intended application.
Q: Does the 1769-L23E-QB1B include integrated I/O?
A: Yes. The supplied specifications list 16 digital inputs, 16 digital outputs, four analog inputs, two analog outputs, six high-speed inputs, and four high-speed outputs. Verify the electrical characteristics and channel requirements before commissioning.

















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