Allen-Bradley 1771-OFE1 Analog Output Module is a four-channel voltage-output module designed for PLC-5 Remote I/O, compatible with 1771 I/O backplanes such as 1771-A1B through A4B. Each channel is configurable via on-board jumpers to output one of the ranges: 1–5 V DC, 0–10 V DC, or ±10 V DC, and it does not supply loop power for loop-powered devices. The OFE1 variant provides voltage outputs, while the related 1771-OFE2 provides 4–20 mA current outputs. As of March 4, 2021, Rockwell Automation announced the 1771-OFE1 is discontinued and no longer available for sale.
