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Allen Bradley PLC 5 1785-PFB

Product image is representative; revision or series may vary. Contact us to request a specific version.

1785-PFB

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The 1785-PFB from Allen Bradley is a communication coprocessor module designed to enhance data exchange within a PLC 5 system. It features robust connectivity options, including a primary standard RS-485 interface and an additional RS-232 serial port for versatility in connections.

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Not an Authorized Distributor: DO Supply is not an authorized distributor for listed manufacturers or tradenames and therefore the manufacturer's warranty does not apply. All of our products come with DO Supply's 2-year warranty.
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Rockwell Disclaimer: The product is used surplus. DO Supply is not an authorized surplus dealer or affiliate for the Manufacturer of this product. The product may have older date codes or be an older series than that available direct from the factory or authorized dealers. Because DO Supply is not an authorized distributor of this product, the Original Manufacturer's warranty does not apply. While many Allen-Bradley PLC products will have firmware already installed, DO Supply makes no representation as to whether a PLC product will or will not have firmware and, if it does have firmware, whether the firmware is the revision level that you need for your application. DO Supply also makes no representations as to your ability or right to download or otherwise obtain firmware for the product from Rockwell, its distributors, or any other source. DO Supply also makes no representations as to your right to install any such firmware on the product. DO Supply will not obtain or supply firmware on your behalf. It is your obligation to comply with the terms of any End-User License Agreement or similar document related to obtaining or installing firmware.

Technical specifications for 1785-PFB

ManufacturerAllen Bradley
Product TypeCommunication Coprocessor Module
Product LinePLC 5
Part Number1785-PFB
Weight2.19 lbs (0.99 kg)
Current Draw200 mA at 5V DC
Display TypeLED Display
Primary PortStandard RS-485 Interface
Serial PortIncludes an RS-232 Port
Minimum Operating Temperature0°C
Maximum Operating Temperature60 °C
Minimum Storage Temperature-40 °C
Maximum Storage Temperature85 °C
Minimum Relative Humidity5% (Non-Condensing)
Maximum Relative Humidity95% (Non-Condensing)
Installation Height1000 m
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The 1785-PFB communication coprocessor module, part of Allen Bradley's PLC 5 series, is engineered to facilitate seamless communication within control systems. It features a primary port employing a standard RS-485 interface, coupled with an RS-232 serial port that offers additional connectivity options. For power requirements, this module draws 200 mA at 5 volts DC.

An LED display provides clear visual feedback for operational status. The temperature range for optimal operation is set between 0°C and 60°C, allowing it to function effectively in a variety of conditions. For storage, the module is capable of withstanding temperatures in the range of -40°C to 85°C, ensuring durability in extreme environments.

The 1785-PFB is designed to work efficiently in relative humidity levels from 5% to 95%, provided that condensation is absent. This feature makes it suitable for installation at heights up to 1000 meters, underlining its versatility for industrial applications requiring reliable communication solutions.

Revision Part #Also known as
1785-PFB Ser A1785-PFB/A, Series A, Rev A
1785-PFB Ser B1785-PFB/B, Series B, Rev B
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