Allen-Bradley 1769-L27ERM-QBFC1B CompactLogix Controller Configured for controller task execution and EtherNet/IP communication in a CompactLogix control system, the Allen-Bradley 1769-L27ERM-QBFC1B...
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Configured for controller task execution and EtherNet/IP communication in a CompactLogix control system, the Allen-Bradley 1769-L27ERM-QBFC1B (1769-L27ERM-QBFC1B controller) provides processor control, Ethernet connectivity, USB access, and integrated digital and analog I/O.
Hardware Specifications
Parameter
Specification
Model
1769-L27ERM-QBFC1B
Brand
Allen-Bradley
Product Type
CompactLogix Controller
Product Line
CompactLogix
Origin
Not specified in supplied data
Weight
1.75 lb (0.79 kg)
Controller Tasks
32 maximum
Programs per Task
100 maximum
Ethernet Ports
2
USB Ports
1
Controller Connections
256 maximum
Ethernet/IP Nodes
16 maximum
Sockets
32 maximum
User Memory
1 MB
DeviceNet Communication
Supported with 1769-SDN scanner
Digital Inputs
16 DC inputs
Universal Analog Inputs
4
Digital Outputs
16 DC outputs
Analog Outputs
2
High-Speed Counter Modules
4 maximum
High-Speed Module Outputs
4 maximum
Integrated Motion Axes
4 maximum through EtherNet/IP network
UPC
885630101262
EtherNet/IP and I/O Architecture
The 1769-L27ERM-QBFC1B provides two Ethernet ports for EtherNet/IP communication and supports up to 256 controller connections. It also supports up to 16 EtherNet/IP nodes and 32 sockets.
The controller integrates 16 digital DC inputs, 16 digital DC outputs, 4 universal analog inputs, and 2 analog outputs. Therefore, the integrated I/O reduces the need for separate local I/O modules in applications that fit within these channel limits.
The controller supports four integrated motion axes through the EtherNet/IP network. In addition, a 1769-SDN scanner provides DeviceNet communication capability.
Frequently Asked Questions (FAQ)
Q: How many controller tasks can the 1769-L27ERM-QBFC1B execute? A: The controller supports up to 32 controller tasks, with a maximum of 100 programs assigned to each task.
Q: What communication interfaces does the controller provide? A: The controller provides two Ethernet ports and one USB port. A 1769-SDN scanner can also provide DeviceNet communication.
Q: How much user memory does the controller provide? A: The supplied specifications list 1 MB of user memory.
Field Installation Guidelines
Install the controller according to the applicable Allen-Bradley CompactLogix installation documentation and enclosure requirements.
Maintain adequate physical clearance around the controller and connected I/O modules for wiring access and service operations. Use the specified mounting method and secure the module against mechanical movement.
Route Ethernet, I/O, and power wiring separately where practical. Avoid routing communication cables alongside high-current switching conductors for extended distances.
Terminate cable shields and functional grounds according to the electrical design and the applicable Allen-Bradley installation requirements. Do not assume that cable shield termination provides protective-earth bonding unless the installation documentation specifies it.
Verify the controller, I/O configuration, firmware compatibility, network addressing, and connected EtherNet/IP devices before placing the system into normal operation.
