1769-IF4XOF2 | Allen-Bradley CompactLogix High Speed 4 In/2 Out Analog Module

The 1769-IF4XOF2 module stands out from other analog I/O modules due to its combination of four analog input channels and two analog output channels within a single compact unit. This integrated design reduces the need for separate input and output modules, saving space and simplifying installation. It also features an 8-bit plus sign resolution, which is relatively low compared to higher-resolution analog modules that often provide 12-bit or 16-bit resolution. Additionally, the module supports both voltage and current signals for inputs and outputs, while some other modules may specialize in only one signal type or offer higher accuracy at a higher cost. This makes the 1769-IF4XOF2 an economical choice for applications where moderate resolution is acceptable and space-saving design is advantageous.

The 1769-IF4XOF2 module supports a variety of voltage and current input ranges. For voltage inputs, it can accept signals from ±10V DC, 0–10V DC, 0–5V DC, and 1–5V DC, providing flexibility in sensor selection. The current input supports standard industrial ranges of 0–20 mA and 4–20 mA. For outputs, the module supports ranges of 0 to 10.5 VDC and 0 to 21 mA, accommodating different actuator and control requirements. This versatility makes the module adaptable to a broad range of industrial automation scenarios.

Yes, the 1769-IF4XOF2 is fully compatible with both CompactLogix and MicroLogix 1500 controllers. This makes it a flexible choice for a variety of automation projects. It supports the CompactLogix system’s modular design, allowing for easy integration alongside other I/O modules. It also fits seamlessly into MicroLogix 1500 systems, providing a cost-effective way to expand analog I/O capabilities. Its versatility supports both legacy and modern Allen-Bradley control architectures.

If you’re seeing maximum counts (32640) on the analog input channel of your 1769-IF4XOF2 module, the issue often stems from incorrect wiring or incomplete configuration. Here are a few important points to check and adjust to resolve the problem:

• Wiring: Double-check that your analog input wiring is correct. For current inputs, ensure that you have the signal wired to I In 0+ and V/I In 0-, and that any necessary jumpers to ANLG Com are in place and properly grounded.
  
• Control Bits: Confirm that the control bits (bits 4 to 8) in the tag viewer are set correctly to enable the input channels. Without these settings, the module will show a default high reading even if the wiring is correct.
  
• Module Configuration: Make sure the module’s settings are configured in the PLC software, including the selection of 0-20 mA or 4-20 mA in the card settings. Incorrect configuration here can lead to invalid readings.
  
• Manual Reference: Refer to the 1769-UM008 manual, page 53, for detailed instructions on configuring the control bits and enabling the channels.
  Properly configuring the wiring and control bits, followed by a download and reboot of the PLC, should resolve the issue and provide valid analog input readings.

Yes, the 1769-IF4XOF2 module is currently active and available for purchase. It continues to be supported by Rockwell Automation as part of their CompactLogix product line. This means that users can integrate it confidently into new and existing systems. It remains a reliable choice for applications requiring analog I/O functionality in CompactLogix or MicroLogix 1500 controllers.