Testing arrangement for an analog input channel for a safety-oriented, especially stored-program controller

摘要

In order to test the analog input channel of a safety-oriented controller (1) for example SPC, to which an analog valuator device (2) is connected via a signal line (8) a test-signal arrangement (13) is assigned to the analog valuator device (2), which test-signal arrangement can be activated by an activation signal generator (20) in the controller (1) via the signal line (8) and then generates a test signal which varies over the measuring range of the analog-input channel. <IMAGE>