ESD C.3034.02, Руководство пользователя, Страница: 109 / 123

Manufacturer Specific Profile Area
CAN-CBX-THERMO
Manual • Doc.-No.: C.3034.21 / Rev. 1.2
Page 109 of 123
8.11.9 Estimated Junction Temperature (2423
h
)
Index
Sub-
index
Description Value range Default Data type Access
2423
h
*
4)
0 Number_of_entries 4 4 unsigned 8 ro
1 estimated_junction_temp_1 8000
h
...7FFF
h
- integer 16 ro
2 estimated_junction_temp_2 8000
h
...7FFF
h
- integer 16 ro
3 estimated_junction_temp_3 8000
h
...7FFF
h
- integer 16 ro
4 estimated_junction_temp_4 8000
h
...7FFF
h
- integer 16 ro
*
4)
This object is only supported from firmware version V2.01 on.
Description of the variable estimated_junction_temp_x:
This variable contains the estimated values of the channel-dependent junction temperature on the circuit
board in steps of 1/256
½
C.
The value is coded as described in the following:
Temperature C
Int Value
d
[ ]
_
° =
16
256
Calculation of the estimated_junction_temperature
estimated_junction_temp = local_temp + channel_temp_offset + slope_compensation_mode
with
local_temp [Object 2420
h
]: value of the temperature on the circuit board
channel_temp_offset
[Object 2507
h
]: temperature offset value for the compensation of the temperature drop
between the local PCB temperature and the real connector temperature.
slope_compensation_mode
[Object 2520
h
]: enables or disables a junction temperature slope compensation.
Current slope_compensation_mode is = ‘0'.