Allen-Bradley 1771-OFE2 PLC Analog Output Module Series B

The Allen-Bradley 1771-OFE2 is a PLC analog output module designed for 1771 I/O systems. It converts processor-supplied data into proportional analog current outputs across four channels. It supports industrial control workflows that require current-based signal transmission to external analog devices.

- Receives processor data through block transfer write instructions for digital-to-analog conversion.
- Converts binary or four-digit BCD values into proportional analog output signals.
- Updates output values across four channels during controller communication cycles.
- Supports block transfer read functions for status and diagnostic feedback.
- Applies optional scaling so engineering-unit data is converted to proportional analog output.

- Four individually isolated differential outputs.
- 12-bit current output design.
- Factory-set 4 to 20 mA output range for the 1771-OFE2 version.
- Selectable data format using binary or four-digit BCD values.
- Requires one I/O slot and draws operating power from the 1771 I/O chassis backplane.

- Drives analog devices such as valve positioners, motor speed controllers, signal converters, and recorders.
- Installs in 1771 I/O chassis used with programmable controllers that support block transfer capability.
- Fits industrial environments that require current-output analog control signals.

- Supplied manufacturer literature covers the Series B version of the analog output module.
- Rear product labeling identifies firmware revision B.