Many workshops still run gantry robots as stand-alone machines. Work orders travel on paper, and output and quality figures are gathered by hand, a day behind reality. Connecting the equipment to MES so that loading tasks, running status and quality results flow into production automatically is the first step in closing the shop-floor information loop, and the basis for scheduling and traceability.

Clarify the data first. One class is task instruction: work order number, part code, target station and priority. Another is status feedback: running, idle, alarm and current operation. The third is quality data: completed quantity, defect codes and inspection results. Different departments own each class, so agree the field definitions and units before discussing protocols and update rates.

Choose the interface by real-time demand. Where cycle time is tight, MES writes task blocks into the PLC through middleware, and the robot picks them up on a handshake signal and acknowledges. Where data volume is modest, OPC UA or database table exchange is enough. Either way keep a manual order channel and a reset procedure after an emergency stop.

Part identity anchors traceability. Fit barcode or RFID reading at the infeed so the robot reads the code before moving, then uploads the part code bound to work order, machine number and timestamp. Define branches for read failures: retry, manual confirmation or divert to an exception area, with the cause logged. No unidentified part should reach the next process.

Close the loop with confirmation. MES breaks the work order into individual handling tasks; after pick-and-place the robot returns a completion signal and actual quantity, and the system deducts line-side stock and advances the operation. Without that signal, book stock drifts from reality and stocktaking turns into argument. Give every transfer a unique task number.

Exception handling shows how deep the integration goes. Alarms, material shortage, full buffers and gripping failures should be reported in real time, so MES can pause dispatching, switch stations or call for replenishment; manual intervention must report recovery. Rework and scrap parts follow a separate return path. Rules held in the system beat verbal coordination.

Data quality and network reliability matter as much. On network loss the machine side buffers tasks and results, then resends and de-duplicates by task number to avoid double counting. Synchronise clocks across terminals, or the traceability timeline scrambles. Once field length, units and coding rules are fixed, keep them stable and version the interface documents.

Implement in stages: status collection and output reporting first, task dispatch next, quality and traceability last, each accepted on its own. Across truss manipulators, gantry robots, truck loading, AS/RS and seventh-axis projects, Truman works to the customer MES specification and opens the required data points, making the machine a genuine node in the shop-floor data network.