44 (67) BRUKER BVT3000 Version 003
Remote interface control
P3 (Port 3 for test only) 4.8.8
Port 3 allows the internal status of the BVT3000 to be read.
It is composed as follows:
Table 4.8. Port3 definition
Read
Syntax: EOT0000P3 ENQ
Response
:STXP3 >ABCDETXBCC
Description
: Allows direct read access to port 3.
Rules
: A and B are always «0». The third character represents the state of
port 3 bits 4 to 7 while the fourth character represents the state of the bits 0 to 3.
All the characters are hexadecimal.
BIT NAME FUNCTION
0 heater on 1 = probe heater is ON
1 booster connected 1 = BVTB3500 present
2 evap conn 1 = evaporator device is connected
3 no gas 1 = missing gas flow
4 overheating 1 = overheating on probe heater
5 exch conn 1 = Exchanger connected
6 LN2 refill 1 = LN2 tank is almost empty
7 LN2 empty 1 = LN2 tank is empty
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