Schambeck SDS 9414I, Operation Manual, Page: 41 / 45

SDS 9414i HPLC Pump
Version: 2.2 (July 2007) Page: 41 / 45
In case of a wrong checksum, the pump will answer with a “ ? ”. Otherwise, when the command is
correct and understood by the pump it answers with a string:
Byte 1 Length This states the total length of the answer, including
the checksum byte and its own length. Normally, the
answer has a length of 4 bytes.
Byte 2 Pump Status This states the pump’s status:
Bit Value
7 Remote start accepted (1 = TRUE)
6 Not used
5 Pressure Failure (1 = TRUE)
4 Not used
3 Not used
2 Pump Head mounted (1 = TRUE)
1 Preparative Pump Head (1 = TRUE)
0 Micro Pump Head (1 = TRUE)
When Bit 0 and 1 are both “0”, a Analytical Pump
Head is mounted.
Byte 3 Pressure This byte states the current pump pressure. Actual
value in MPa is the received byte x 0.2.
Byte 4 Checksum This checksum is calculated as described above.
The answer is always terminated with a “
. ”.