Emerson Rosemount 2410 - Sakura System Characteristics

1.2 Sakura system characteristics
1.2.1 Sakura protocol overview
The tank hub supports two versions of the Sakura protocol: Sakura MDP and Sakura
V1, each supporting up to 10 tank positions
(2)
. The tank hub automatically detects which
protocol to use, based on the received requests from the Sakura host.
Sakura MDP protocol
The Sakura MDP protocol is sometimes also called “old Sakura protocol” or Sakura binary.
The Sakura MDP protocol includes one request type.
Sakura V1 protocol
The Sakura V1 protocol is sometimes called “new Sakura protocol” or Sakura ASCII. The
Sakura V1 protocol includes several request types. The tank hub identifies the request type,
and replies with the corresponding response type.
Electrical interface and protocol
Table 1-1: Sakura Electrical Interface and Protocol Options
Protocol Electrical interface
Sakura MDP Sakura Non-IS 2-wire bus
Sakura V1
1.2.2 Sakura response data
Table 1-2 shows supported response data for the Sakura MDP and Sakura V1 protocols.
Table 1-2: Sakura Protocol Response Data
 Sakura MDP Sakura V1
Level ✓ ✓
Ullage ✗ ✓
Average liquid temperature ✓ ✓
Average vapor temperature ✗ ✓
Sixteen spot temperatures ✗ ✓
Free water level ✗ ✓
Pressure (Vapor, middle or liquid) ✗ ✓
Alarm status ✓ ✓
Observed density
(1)
✗ ✓
(1) Maximum 3 tank positions.
(2) Tank hub version “Multiple tanks” can emulate up to 10 tanks (10 gauges). Tank hub version “Single tank” can
emulate up to 2 tanks (2 gauges).
Manual Supplement Introduction
00809-0800-2410 August2023
Emerson.com/Rosemount 7