Redundant H1 cards provide increased availability.
The DeltaV system offers redundant H1 interfaces. The two H1 interfaces are connected with a redundant terminal block to provide back-up link active schedule (LAS) capability that also maintains communication with the host system. Transfer to the standby card is automatic and requires no special configuration. Ongoing diagnostics ensure the standby H1 card is available on demand. This process requires no user interaction. Provides synchronized control. The DeltaV system allows DeltaV function blocks to run in the DeltaV FOUNDATION Fieldbus H1 card. The assigned function blocks are scheduled in the fieldbus macro cycle, and supplement the available function blocks of the devices to provide powerful algorithms tightly coupled with the field device function blocks. Even if communication with the DeltaV controller is interrupted, the H1 assigned function blocks continue to execute within the segment macro cycle.