| 摘要 |
FIELD: data transmission engineering; mine industry, such as to control conveyers of conveyer lines. SUBSTANCE: device has sectionalized two-wire communication line, command transmit-receive unit shaping forward-going information, unit shaping forward-going data entered into communication line, response data receiver, and final transmit-receive units distributed along communication line. Novelty is that command and final transmit-receive units are provided with controlled switches whose inputs are connected to inverted outputs of communication line data input units and their outputs are connected in parallel with communication line. Pole-sign compilation units are connected to communication line in parallel opposition. Final directly transmitting units have power voltage monitoring relay whose switching contacts are inserted in communication line. EFFECT: improved carrying capacity of device due to forced discharge of communication line capacitor. 3 cl, 2 dwg |
