SEALED ENERGY SYSTEMS
®
15
User Manual
Battery Broadcast Message for the Charger
Battery Broadcast Message for the Charger w/PEC
SMBus Host (Master) Smart Battery (Slave)
3.3.6. SMBus battery Critical Message Protocol
A Smart Battery to SMBus Host or Smart Charger message is sent
using the SMBus Write Word protocol. Communication begins with
the SMBus Host’s or Smart Battery Charger’s address, followed by
the Smart Battery’s address which replaces the Command Code. The
SMBus Host or Smart Charger can now determine that the Smart
Battery was the originator of the message and that the following 16
bits are its status.
Battery Critical Message
Battery Critical Message w/PEC
SMBus Host (Master) Smart Battery (Slave)
3.3.7. Host to battery Message (Slave Mode)
The Host acting in the role of bus master uses the read word, write
word, and read block protocols to communicate with the battery,
operating in slave mode.
1
7
1
1
8
1
8
1
8
1 1
S
Charger
Address
Wr A
Command
Code
A
Data Byte
low
A
Data Byte
High
A P
1
7
1
1
8
1
8
1
8
1
8
1 1
S
Charger
Address
Wr A
Command
Code
A
Data
Byte
low
A
Data
Byte
high
A
PEC
A P
1
7
1
1
8
1
8
1
8
1 1
S
Target
Address
Wr A
Battery
Address
A
Data Byte
low
A
Data Byte
High
A P
1
7
1
1
8
1
8
1
8
1
8
1 1
S
Target
Address
Wr A
Battery
Address
A
Data
Byte
low
A
Data
Byte
High
A PEC A P
