Part identity
The R88A-CNEA02C-E: Lifecycle is current on the spec row, so the part is in production and available to specify into a new motion build without last-time-buy pressure.
What it does in the system
R88A-series items are the cabling and connector accessories that wire an Omron servo drive to its matching R88M-series motor — encoder feedback, power, or brake leads depending on the suffix. Plugged at both ends, no field termination, which is the point: keeping the encoder shield continuous from the motor back to the drive avoids the common-mode noise that otherwise shows up on the position-error trace.
Sourcing posture
Lifecycle is current, so the cable is specified into the BOM against an RFQ rather than chased on the surplus channel. No successor or second-source MPN is on record, so the Omron R88A-CNEA02C-E code stays on the BOM line and is quoted to order.