Nmea 0180 [better] Info
It was strictly a "single-talker" protocol. You could not have multiple devices sharing data on the same line.
NMEA 0180 was a . Unlike modern standards, it was not a network—it was a simple one-way talker/listener system. nmea 0180
In 1983, NMEA released , which was backward-compatible with 0180 in theory but far superior. Here is the direct comparison: It was strictly a "single-talker" protocol