Surefire BMS-350, Installation And Operation Manual

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50
MODBUS INFORMATION
Time
step
Master's action BMS-350 action Registers
8 Reads command status register.
Sees IDLE (0x55). Proceeds to
next step.
40010 (status) 0x55
40011 (cmd) 0x03
40012 (param) 0x7D
40013 (exec) 0x00
9 Write command to unlock unit. 40010 (status) 0x55
40011 (cmd) 0x01
40012 (param) 0x7D
40013 (exec) 0x00
10 Request command execute by
writing 0x01 to command exec
reg
40010 (status) 0x55
40011 (cmd) 0x01
40012 (param) 0x7D
40013 (exec) 0x01
11 Sees command exec register with
non-zero value. Reads command.
Attempts to execute command.
Succeeds in unlocking BMS-350
Writes OK code to command status
reg.
40010 (status) 0x01
40011 (cmd) 0x01
40012 (param) 0x7D
40013 (exec) 0x01
12 Polls command status register.
Sees OK (0x01). Proceeds to
next step.
40010 (status) 0x01
40011 (cmd) 0x01
40012 (param) 0x7D
40013 (exec) 0x01
13 Write 0x00 to command exec
reg.
40010 (status) 0x01
40011 (cmd) 0x01
40012 (param) 0x7D
40013 (exec) 0x00
14 Sees command exec register with
zero value. Returns to idle state.
40010 (status) 0x55
40011 (cmd) 0x01
40012 (param) 0x7D
40013 (exec) 0x00
15 Polls command status register.
Sees IDLE (0x55). Proceeds to
next step.
40010 (status) 0x55
40011 (cmd) 0x01
40012 (param) 0x7D
40013 (exec) 0x00
16 Write command to set high
temp limit (0x03) to command
number reg. Desired parameter
is still in parameter register, so
won't write it again.
40010 (status) 0x55
40011 (cmd) 0x03
40012 (param) 0x7D
40013 (exec) 0x00