How does E-PLEX® protect against errors on the bus?
There is a complex, but near-instantaneous, error-preventation process at work on an E-PLEX® network. On an E-PLEX® bus, data flow is initiated via the Clock. When the modules receive this command data is transmitted in an appropriate time-slice and the clock immediately echoes it back. The node then checks the data received back from the clock for errors. The Clock and nodes on the bus calculate a checksum of the entire packet and data is rejected and immediately resent if these checksums do not match. This process takes place 10 to 30 times per second.
