How to Install the Allen-Bradley 1769-IF8 Compactlogix Input Module

The Allen-Bradley 1769-IF8, or compact I/O analog input module, features eight differential inputs with a voltage range of +/-10 Volts DC, and current ranges of 0 to 20 mA and 4 to 0 mA. These inputs are useful for controlling motion or regulating the temperature of a machine. In addition, they are ideal for measuring and interpreting sensor and actuator data.


In order to install the Allen-Bradley 1769-IF8, remove the End Cap Resistor (ECR) from the PLC and slide the 1769-IF8 Compactlogix Instuction module into its position. Then, remove the 1769-ECR part, using the plastic piece with a lock. The 1769-IF8 will slide into the position of the ECR and the PLC, and close the tab.

The 1769-IF8 compact I/O input module is manufactured by Allen-Bradley/Rockwell Automation. The 1769-IF8 has eight differential inputs and is compliant with CE, C-UL, and UL 508 standards. Its maximum operating altitude is 2000 meters. Its high-quality construction and extensive functionality make it a valuable asset in industrial applications.


The Scaling of Allen-Bradley 1768-IF8 Compactlogix Input module is a process that translates the raw signal to a meaningful value. There are a few ways to do this. The most basic way is to convert the raw 4-20mA signal to a more meaningful value. To see an example, imagine that a level sensor is set to read 5 feet, send a 20mA signal, and receives a 4mA signal. Then, through scaling, the sensor will convert the raw signal into a meaningful value, such as feet.

The 1769-IF8 has an operating voltage range of +/-10 Volts DC for voltage inputs and 0 to 10 Volts DC for current inputs. It has an overall accuracy of +/-0.2% for current and voltage signals and 0.03% for input non-linearity and repeatability. It features an indicator light that displays a Fault condition. It also has automatic self-diagnostics and alarm processing.

Re-installing the End Cap Resistor on the other side

To re-install the End Cap Resistor, you should unplug the PLC and then slide the 1769-IF8 module between the PLC and ECR module. There is a tab on top of the 1769-IF8 module. To remove it, slide the plastic piece with a lock onto the 1769-ECR. Once the plastic piece has been removed, slide the 1769-IF8 module into the same position as the ECR module. Close the tab on the top of the module to complete the installation.


The RSLogix input module for Allen-Bradley 1769-IF8 Compactlogix provides a variety of I/O options. RSLogix input modules are typically used in mid-sized applications, such as compact machine-level control. The 1769-IF8 Compactlogix controller provides scalable, reliable, and affordable motion control for small, stand-alone equipment.

The 1769-IF8 is a combination analog I/O module from Allen-Bradley. The unit features eight differential inputs and can accommodate a range of 0 to 10 Volts DC and 0 to 20 mA. The 1769-IF8 has a wide temperature range and is suitable for industrial applications. It weighs 450 grams and measures 118 x 87 x 52.5 millimeters.

Studio 5000 Logix Designer

The Allen-Bradley 1769-IF8, a compact I/O analog input module, is compatible with the MicroLogix 1500 and 1769 CompactLogix controllers. The module has eight differential inputs and supports a wide range of voltage and current (up to +10V DC and 0-20mA). The 16-bit unipolar and 15-bit plus sign resolutions and four to twenty milliamps of current are supported.

The Allen-Bradley 1769-IF8, also known as the IF8 CompactLogix Input module for the Studio 5000 Logix Designer, offers 8 differential inputs with a range of 0-20 milliamps. The 1769-IF8 is compatible with the CompactLogix 1500 controller and is available in black and white. It has a maximum of three Ethernet ports. The 1769-IF8 Compactlogix Input module for Studio 5000 Logix Designer weighs approximately 450 grams and measures 118 x 87 x 52.5mm.

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