| 摘要 |
The invention relates to a system having a signalling device (1) and a signalling device evaluator (2). In order to provide an improved system for reliably ascertaining a switching state of the signalling device (1), according to the invention the signalling device (1) comprises a first and a second sensor (3, 4), a first and a second movably mounted ram (13, 14) and an evaluation unit (5), wherein for reliably detecting the switching state of the signalling device (1) the signalling device evaluator (2) emits a first dynamic signal via a first output (23) and emits a second dynamic signal via a second output (24), wherein the evaluation unit (5) modifies the first dynamic signal passed via the signalling device (1) when the first position of the first ram (13) is ascertained, and modifies the second dynamic signal passed via the signalling device (1) when the first position of the second ram (14) is ascertained, wherein the signalling device evaluator (2) is designed in such a way that it monitors the first and the second input (33, 34) and ascertains therefrom the switching state of the signalling device (1). |
