1769-L33ER Allen-Bradley CompactLogix 5370 Ethernet/IP CPU Processor
Manufacturer: Allen Bradley
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Part Number: 1769-L33ER
Condition：New with Original Package
Product Type: CPU Processors
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Country of Origin: USA
Payment:T/T, Western Union
Shipping port: Xiamen
Warranty: 12 months
Allen-Bradley 1769-L33ER CompactLogix 5370 Controller
The Allen-Bradley 1769-L33ER serves as the primary 1769-L33ER CPU Processor utilized to execute central execution logic, dual-port networking protocols, and multi-axis synchronization across CompactLogix 5370 platform networks.
Hardware Specifications
| Parameter | Specification |
|---|---|
| Model | 1769-L33ER |
| Brand | Allen-Bradley / Rockwell Automation |
| Origin | USA |
| Module Type | CompactLogix 5370 Ethernet/IP Controller |
| User Memory | 1 MB |
| Local I/O Expansion Capacity | Up to 16 local 1769 I/O modules |
| Ethernet Communication | 2 x 10/100 Mbps RJ45 ports |
| Network Topology Support | Device-Level Ring (DLR), Linear, Star |
| Communication Protocols | EtherNet/IP, CIP Motion, CIP Sync |
| Integrated Motion Axis Limits | Up to 4 motion axes over EtherNet/IP |
| Local Backplane Current Load | 1.0 A at 5 VDC |
| Programming Interfaces | 1 x USB 2.0 peripheral port |
| Auxiliary Storage | SD card slot supported |
| Operating Temp | 0 deg C to +60 deg C |
| Storage Temp | -40 deg C to +85 deg C |
| Relative Humidity | 5% to 95% RH, non-condensing |
| Software Interface | Studio 5000 Logix Designer |
EtherNet/IP Deterministic Networks and Firmware Flash Compatibility
The 1769-L33ER processor utilizes embedded dual-port hardware to maintain high-velocity communication loops directly through EtherNet/IP deterministic networks. The native network interface eliminates the requirement for separate communication bridges while supporting Device-Level Ring (DLR) layouts to provide media redundancy for connected I/O links and drive systems. The hardware architecture enforces explicit execution windows by managing CIP Motion and CIP Sync variables across up to 4 distinct axes. Firm baseline execution relies on strict firmware flash compatibility, requiring matching revisions between the localized processor memory bank and the execution code generated within the central Studio 5000 Logix Designer project.
Frequently Asked Questions
Q: Does the 1769-L33ER controller support the insertion or removal of local I/O modules while the backplane is actively powered?
A: No. The local 1769 backplane architecture does not support online insertion and removal (RIUP). Operators must isolate all power supplies feeding the controller rack before modifying any module connections to prevent memory corruption or hardware component failure.
Q: How do the two integrated Ethernet ports handle IP addressing configurations?
A: The embedded dual ports share a singular network interface and operate under one MAC address. The hardware functions internally as a three-port real-time switch, allowing DLR pass-through traffic without allocating distinct IP addresses to each port.
Field Installation Guidelines
- Chassis Orientation: Fix the processor onto standard 35 mm symmetric DIN rail infrastructure or mount it flat against a rigid steel enclosure plate. Verify that the bus extension slide locks mesh completely with adjacent local I/O expansion modules.
- Electrical Grounding: Connect the grounding terminal of the local power supply directly to a functional earth ground bus bar utilizing heavy-gauge copper conductors. Maintain low-impedance pathways to ground to shield the 1 MB internal user memory from electromagnetic surges.
- Network Infrastructure: Deploy Cat5e or higher shielded twisted-pair (STP) cables for both EtherNet/IP channels. Route these network linkages inside isolated metal raceways to protect deterministic communication frames from adjacent power cabling fields.
- Thermal Boundaries: Maintain clear ventilation zones measuring at least 50 mm around all faces of the CPU frame. Ensure environmental ambient metrics do not exceed the 60 deg C maximum operational benchmark during continuous execution intervals.