Method for monitoring the functional capability of a device system with a power tool and a remote control

A method for monitoring the functional capability of a device system (10;

• 50), which includes a power tool (12) and a remote control (13), during operation, including the following steps:
• a safety-relevant control signal (41) is sent from a control element (35) of the remote control (13) to a first checking unit (34;
• 51) of the remote control (13);
• the control signal (41) is placed in a data packet (42;
• 55), together with a security code (SC;
• SC-1, SC-2), by the first checking unit (34;
• 51) and transmitted from the first checking unit (34;
• 51) to a second checking unit (28;
• 52) of the power tool (12) via a communication link (36, 37);
• the transmitted security code (43;
• 56, 57) is extracted from the data packet (42;
• 55) by the second checking unit (28;
• 52) and forwarded to a monitoring unit (44;
• 53, 54) upon the request of the monitoring unit (44;
• 53, 54);
• the transmitted security code (43;
• 56, 57) is compared with a comparison code (VC;
• VC-1, VC-2) by the monitoring unit (44;
• 53, 54);
• and
• the power tool (12) is switched into a safe state by the monitoring unit (44;
• 53, 54) if the transmitted security code (43;
• 56, 57) deviates from the comparison code (VC;
• VC-1, VC-2).