A remote diagnostic system for robots including a number of at least two robots, wherein a controller of each robot of the system is locally connected to a service unit provided with local processing power, a remote service center provided with a connector server is arranged, and a communications infrastructure for transferring packets of information between a controller of a robot of the system and connector server via the service unit is arranged for performing remote monitoring and diagnostics at the remote service center, wherein the communications infrastructure uses internet and/or GPRS communication lines.