BVT3000 Version 003 BRUKER 39 (67)
Authorised functions
IS (Interface status) 4.8.3
Read
Syntax: EOT 0 0 0 0 IS ENQ
Response
:STXIS > ABCD ETX BCC
Description
: This command allows the interface status to be read back.
Rules
: The status word is made of sixteen bits, each one represents a par-
ticular function of the interface as detailed below. The 16 bits are sent as four
hexadecimal numbers preceded by «>» to warn the computer that the data is
hexadecimal. Digits ABCD are ASCII characters representing a hexadecimal digit
(0-9, A-F).
Interface Status (IS) in the format (>ABCD)
Table 4.5. Interface status
DIGIT BIT SIGNAL NAME FUNCTION
D1 0 heater on 1= heater is ON
D2 1 not used always 0
D3 2 evap conn 1 = evaporator connected
D4 3 missing gas flow 1 = missing gas flow
C1 4 overheating 1 = heater overheating
C2 5 exch conn 1 = exchanger connected
C3 6 LN2 refill 1 = refill LN2 tank
C4 7 LN2 empty 1 = LN2 tank is empty.
B1 8 evaporator status 1 = LN2 heater is on
B2 9 not used 1 always
B3 10 booster connected 1 = BVTB3500 present
B4 11 reserved 0 always
A1 12 reserved 0 always
A2 13 reserved 0 always
A3 14 reserved 0 always
A4 15 reserved 0 always
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