Overview
Key Features
- 1.5 MB memory: Provides memory capacity for controller programs and application data.
- Redundant ControlNet communication: Includes primary and redundant ControlNet ports, with Channel B providing the redundant network connection.
- Serial communication: One RS-232 port supports DF1 and ASCII protocols.
- Network access: Includes one NAP port for network access.
- Compact I/O support: Supports up to 30 Compact I/O modules.
Communication and Configuration
The 1769-L35CR combines serial and ControlNet communication interfaces. The RS-232 port supports DF1 and ASCII communication, while the two ControlNet ports provide separate network connections for the redundant communication configuration.
Meanwhile, the NAP port provides an additional network access point. Its support for up to 30 Compact I/O modules allows the controller to work with a distributed range of local I/O hardware within the supported system configuration.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model | 1769-L35CR |
| Spare Model | 1769L35CR, 1769-L35CR/A |
| Brand | Allen-Bradley |
| Product Type | CompactLogix ControlNet Redundant Controller |
| Product Series | CompactLogix |
| Memory | 1.5 MB |
| Serial Communication | 1 x RS-232 |
| Serial Protocols | DF1 / ASCII |
| ControlNet Ports | 1 x Primary ControlNet Port |
| Redundant Communication | 1 x Redundant ControlNet Port (Channel B) |
| Network Access Port | 1 x NAP Port |
| Compact I/O Capacity | Up to 30 modules |
| Communication Rate | 19.2 kbit/s |
| Product Status | Discontinued by manufacturer |
| Manufacturer | Allen-Bradley |
| Country of Origin | USA |
| Weight | 0.35 kg |
| Estimated Shipping Dimensions | 6.8 x 9.7 x 13.2 cm |
| Tariff Code | 8537101190 |
Product Lifecycle and Selection Notes
The 1769-L35CR is discontinued by the manufacturer. Therefore, buyers replacing an existing controller should check the complete model number, including the /A suffix where applicable, before ordering.
In addition, verify the existing ControlNet network configuration, serial communication requirements, and Compact I/O module count. These details help confirm whether the controller matches the installed system configuration.
Frequently Asked Questions
Q: What type of controller is the Allen-Bradley 1769-L35CR?
A: It is a CompactLogix ControlNet redundant controller with 1.5 MB of memory. It provides serial communication and primary and redundant ControlNet connections.
Q: What communication interfaces does the 1769-L35CR provide?
A: It provides one RS-232 serial port supporting DF1 and ASCII, one primary ControlNet port, one redundant ControlNet port on Channel B, and one NAP port.
Q: Is the 1769-L35CR still manufactured?
A: No. The manufacturer has discontinued this model. When sourcing replacement stock, check the complete part number and hardware revision against the existing installation.
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