A METHOD OF REDUCING DOWNTIME OF PRODUCTION CONTROLS DURING UPGRADES

摘要

An apparatus for updating the software in a subsea electronics module (SEM), comprises: a first data transmitting and receiving means (1), a second data transmitting and receiving means (2), and a transmission line (3) between the first and the second data transmitting and receiving means (1, 2), wherein packets of data (6) from the first data transmitting and receiving means (1) are transmitted to the second data transmitting and receiving means (2) and aggregated to form a local master, from which software in SEMs may be updated locally. The packets of data (6) may be transmitted using unutilised capacity (5) of the transmission line (3) not required during normal operations. (Fig.2) Qrr ----- ---