32 (67) BRUKER BVT3000 Version 003
Remote interface control
AF (Air flow) 4.8.1
Write
Syntax: EOT0000STXAF>ABCD ETX BCC
Response
:ACK
Description
: This command allows to control the gas flow delivery.
Rules
: The unit has four gas flow valves. ABCD represent the value of the
delivery. Each character represent one valve state (a part of the maximum delive-
ry) and can only be «0» or «1». The total delivery is the amount of the four indivi-
dual deliveries. A NACK is sent if one of these characters is not «0» or «1». Table
"Flow rate versus command" on page 12
shows the different gas flow delive-
ries.
Example
: If ABCD is set to «1100» (12 decimal), The delivery corresponds to
1600 litres per hour.
NB: After power on the microcontoller reads 4 jumpers (JP6-JP8) located on the
interface printed circuit. Each jumper can be switched between positions marked
«1» and «0». Each jumper represents a valve; in position «0» the valve will be
closed. JP6 represents valve D and JP8 valve A. The initial flow rate is set accord-
ing to the combination of all jumpers.
WARNING
: Space characters are not allowed.
Read
Syntax: EOT0000AF ENQ
Response
:STXAF >ValueETXBCC
Description
: This command allows gas flow delivery to be controlled.
Rules
: Value is a 4 characters string. Table
"Flow rate versus com-
mand" on page 12
shows the different gas flow deliveries.
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