Masoneilan SVI II AP Digital Positioner Quick Start Guide
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© 2020 Baker Hughes Company. All rights reserved
.
The Burst mode is when the HART
®
device continuously sends
out data for a device not capable of being polled by a Master.
Use this mode only for devices that are passive (i.e. not a
HART
®
master), such as a HART
®
to Analog converter (SPA
from Moore Industries, Tri-Loop by Rosemount). Turning on
Burst mode affects the overall communication bandwidth. Burst
mode is not available for SVI II AP in HART
®
7.
In a DCS-controlled environment, if you are using a:
Tri-Loop configuration: Here the DCS does not have an
analog-capable card. The SVI must be in BURST mode
when using Tri-Loop.
DCS with a mix of analog output cards: Some without
HART
®
and some with HART
®
. SVIs connected to cards
without HART
®
need to use HART
®
to analog converter.
The SVI also must be set to use Burst mode so it sends
the response as requested.To see how the Burst mode
is configured see the ValVue or SVI II AP DTM online
help.
The Burst mode can send the following commands:
Cmd1
: PV
Cmd2
: %range/current
Cmd3
: Dyn vars/current
Cmd9
: Device vars w/status
Cmd33
: Device variables
Choose the Burst command variables to be returned by
referring to list of device variables in Table
C: Burst Mode
Содержание Masoneilan SVI II AP Series
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