Surefire BMS-350, Installation And Operation Manual

Page: 47 / 56

47
MODBUS INFORMATION
Modbus
address
Register name
Modbus master does
R (Read) or RW
(Read or Write)
Data type Notes
40038 Safety T/C Tempera-
ture Threshold
unsigned int
16
Bit 9..0 is 0-2400 degrees (Thermocouple)
40039
thru
40249
Unallocated unsigned int
16
Read as zero, can be written but will be ignored
40250 BMS diagnostics regis-
ter #1 (R)
unsigned int
16
Factory use only
40251 BMS diagnostics regis-
ter #1(R)
unsigned int
16
Factory use only
40252 BMS read count (R) unsigned
int16
Number of packets sent by the BMS board to the
Modbus board to read the contents of a holding reg-
ister
40253 Modbus board firm-
ware revision (R)
unsigned
int16
High byte: uint8 – major release number
Low byte: uint8 – minor release number
Ex: Version 1.7 will exhibit 0x17
40254 Modbus read count (R) unsigned
int16
Number of function 03 requests from the Modbus
master
40255 BMS write count (R) unsigned
int16
Number of packets sent by the BMS board to the
Modbus board to update the contents of a holding
register
40037 Safety T/C Tempera-
ture
unsigned int
16
Bit 9..0 is 0-2400 degrees (Thermocouple)