1.1 Emulation capabilities
Emulation enables the replacement of old devices with Rosemount devices in another
vendor’s existing tank gauging system. The Rosemount device will perform just like the
replaced gauge, using the other vendor’s protocol to communicate.
By using the other vendor’s field and control room communication protocol with modern
Rosemount tank gauging devices, the legacy system can be modernized step-by-step. The
legacy system can be upgraded while tanks are in operation and existing wiring can be
re-used.
The tank hub can emulate replaced devices, acting as either slave or master. The tank hub
slave emulation is described in this document.
Tank hub acting as slave
When an old gauge from another vendor is replaced with a tank hub connected to a
Rosemount field device, the tank hub will act as a slave answering requests and sending
data upwards towards the host.
A stepwise “bottom-up” upgrade is done by replacing legacy gauges to begin with, and
changing the complete control system at a later occasion.
Figure 1-2: Tank Hub Slave Emulation
Introduction Manual Supplement
August2023 00809-0800-2410
6 Emerson.com/Rosemount
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