Method and apparatus for communicating with non-addressable notification appliances

摘要

A non-addressable fire alarm system, with a fire alarm control panel and one or more non-addressable devices, is provided. The fire alarm control panel sends a broadcast command to the one or more non-addressable devices in the fire alarm system. In response thereto, the one or more non-addressable device modify at least one aspect of one or more communication lines in the fire alarm system. For example, the non-addressable device may generate an open circuit, a closed circuit, or put a current on the one or more communication lines. As another example, the non-addressable device may send a communication back to the fire alarm control panel.

主权项

1. A method for a fire alarm control panel to communicate with a plurality of non-addressable appliances in a fire alarm system, the method comprising:
sending, via one or more communication lines, a broadcast command to the plurality of non-addressable appliances; analyzing the one or more communication lines; determining a response from one or more of the plurality of non-addressable appliances based on the analyzing of the one or more communication lines; receiving an input to the fire alarm control panel indicative that at least one of the non-addressable appliances has been reset; in response to receiving the input:
subsequently analyzing the one or more communication lines; anddetermining whether the response is still present based on the subsequently analyzing of the one or more communication lines.