A bus interconnect interfaces a host system to a radio frequency (RF) generator that is coupled to a plasma chamber. The bus interconnect includes a first set of host ports, which are used to provide a power component setting and a frequency component setting to the RF generator. The ports of the first set of host ports are used to receive distinct variables that change over time. The bus interconnect further includes a second set of generator ports used to send a power read back value and a frequency read back value to the host system. The bus interconnect includes a sampler circuit integrated with the host system. The sampler circuit is configured to sample signals at the ports of the first set at selected clock edges to capture operating state data of the plasma chamber and the RF generator.