COM462RTU_D00010_04_M_XXDE / 06.2021 25
COMTRAXX® COM462RTU
6.2.5 Common alarm and device failure
C = Common alarm and D = Device lost (device failure)
Word 0x0E
HiByte
HiByte
C
D
Common alarm, 1 byte:
LSB = 0 or 1
Device error, 1 byte:
LSB = 0 or 1
The common alarm bit is set as soon as an alarm status from the respective BMS device is
detected.
The device error bit is set when communication with the respective BMS device is no longer
possible.
6.2.6 Channels 1 to 32 with analogue and/or digital values
Word 0x00
0x01
0x02
0x03
HiByte
LoByte
HiByte
LoByte
HiByte
LoByte
HiByte
LoByte
Floating point value (Float)
AT&T
R&U
Channel description
Every analogue BMS device channel can contain alarm messages, operating messages, measured
values, test messages and descriptive text. Both analogue and digital information can be
transmitted.
AT&T = Alarm type and test type (internal/external)
R&U = Range and unit
For details on the channel description refer to chapter 6.4.
6.2.6.1 Float = Floating point value of the BMS channels
Wo
rd
0x00
0x01
By
te
HiByte
LoByte
HiByte
LoByte
Bit
31
30
24
23
22
16
15
8
7
0
S
E
E
E
E
E
E
E
E
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
M
Presentation of the bit order for processing analogue measuring values according to IEEE 754
S = Sign
E = Exponent
M = Mantissa
