C-Bus was designed to use a relatively low data rate as this provides huge benefits such as : - topology independence - lack of need for bus terminations - long bus lengths The downside of this is that there is a limit to the rate of messages. The C-Bus protocol has been designed to make extremely efficient use of the bandwidth, and the practical throughput is much higher than would be expected for the bandwidth. For short messages, there is an upper limit in the region of 40 messages per second. When third party devices are sending messages onto C-Bus, they must take this into consideration. To minimise disruption to other devices, it is recommended that devices : - use concatenated commands for maximum efficiency - send no more than 5 messages per second peak rate - send no more than 2 messages per second for sustained periods
