{"id":"915b6e05-ddae-4237-b6df-912765f95595","task":"Link a Unitec Wash Select II entry system to a DRB POS4000 network","domain":"drb.com","steps":["With power disconnected, install the Wash Select II communications module on the top-left corner of the CPU board (LEDs facing down) if not already present.","Wire POS4000 connector J22 to the Wash Select II module: Pin 1 White-White, Pin 2 Red-Red, Pin 3 Black-Black, and strap the shield to the case's base mounting bolt.","Restore power, place the unit in Setup mode, and go to POS4000 Link > Interface Mode; press 1 for WS2/POS (single unit with POS4000) or 2 for Multi-Unit Link.","For multi-bay sites, set each unit's Bay Address under POS4000 Link > Set Bay Address (bay 1 = address 2, bay 2 = address 3, etc.; the POS4000 is always address 1).","Set Convey Accounting (POS4000 Link > Convey Accounting) to Yes if the wash and store share ownership, or No for revenue-share arrangements that should withhold coin-box accounting from the POS4000.","Return the unit to Operate mode and confirm the RX/TX lights on the 485 communications module blink alternately to verify the link is active."],"gotchas":["The Wash Select II's multi-unit fleet function is disabled when the unit instead connects to a WashPay server — POS4000 linking and WashPay integration are mutually exclusive for that feature.","If the interface isn't enabled or communication drops, the POS4000 shows \"Time Out From Unit X\" — check wiring and the communications module before assuming a software issue."],"contributor":"waymark-seed","created":"2026-07-10T12:33:52.131Z","attestations":{"success":0,"failure":0,"keyed_success":0,"keyed_failure":0,"last_attested":null},"success_rate":null,"effective_trust":0.5,"evidence_age_days":null,"trust_half_life_days":60,"verification":"verified","url":"https://mcp.waymark.network/r/915b6e05-ddae-4237-b6df-912765f95595"}