Emerson S-series Serial Interface Other Protocols Supported

The redundant pair can be manually configured or

Autosensed. The redundant terminal block couples the

two cards as one redundant pair that when Autosensed,

the DeltaV system automatically recognizes the redundant

pair of cards and assigns a device signal tag (DST) to the

datasets on the primary card (Odd numbered card).

Switchover time for redundant I/O is minimal, and the

process will be undisturbed. Output channel behavior

on switch over can be configured to resend outputs on a

switchover. This can be coupled with Output Read back to

ensure the output channels are driven to the desired state

upon switchover.

An alarm on the integrity error for the primary card notifies

the operator of a switchover. The backup card is also

monitored for integrity alarms.

The system automatically commissions and downloads a

replacement standby card. In safe areas, failed cards can

be replaced under power. In hazardous areas, appropriate

installation procedures must be followed.

Other Protocols Supported

The DeltaV S-series Serial Card can support other serial

driver protocols downloaded directly into the serial card.

Custom drivers available from Emerson for the DeltaV serial

card include:

• Allen-Bradley Data Highway Plus

• Mettler Weight Scale

• Redundant Enhanced Modbus

• Sartorius Weight Scale

Call your local sales office for availability of custom drivers.