Published November 4, 2025 · by Tyler Wray
Twenty-four-seven field support is the single most-claimed and least-delivered service in industrial automation. A serious program is built around three things: a rotation, a runbook, and a stocked truck.
The rotation
A real on-call rotation has at least three engineers, with one primary, one secondary, and a manager who can escalate to the OEM if the issue is hardware-level. One-person 'rotations' fail the first time that person gets the flu during harvest.
The runbook
Every customer in the program has a one-page runbook on the dispatcher's desk: site contact, gate codes, panel locations, platform versions, backup file locations, and the three most likely failure modes. The first ten minutes of any call go faster when the runbook is current.
The truck
A stocked service vehicle carries a laptop with every IDE the customer base uses, a USB-to-serial kit that actually works, a Fluke meter that has been calibrated this year, and the most common I/O modules and relays for the platforms in the field. If a tech has to drive past the shop to grab parts, the program is not really 24/7.