1 Hz data transmissions, if enabled, will occur only while driving or while the battery is
being charged and the battery gauge has not yet reached 100%.
7.7.3.2.3 Data element structure
Each packet consists of a number of 2-byte data elements
(see Table 1 for full list).
The first byte in the data element is the element's identifier
(ID in Figure 63), which is unique to each data element.
The second byte is the element's data value (Data in Figure
63).
Figure 63: A 2-byte data element
7.7.3.2.4 Packet structure — FullData
Each element is transmitted in sequence, according to its ID. Disregarding the dummy
element (see next section), the packet begins with the start element and ends with the
checksum — see Figure 64. The start element's ID is always 0x01 and the checksum's ID,
the last element, is always 0xFF.
Figure 64: Packet structure — FullData
7.7.3.2.5 Packet structure — 1 Hz Data
The data is transmitted in chronological order in sets of three (normally 24 elements). Each
set comprises a sample of battery voltage, ambient temperature and motor current — see
Figure 65. The oldest set is transmitted first followed by 7 or more similar sets until the
transmit buffers are emptied. Once started, the 1 Hz Data transmission is completed before
any Full Data transmission is started — this may mean a Full Data transmission is delayed
slightly if a 1 Hz Data transmission is already in progress.
GBK51948 RHINO2
Installation Manual Issue 5
Diagnostics - Page 135
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