9 appendix a, A.1 description of interface, A.2 commands and queries – Eppendorf FemtoJet express User Manual
Page 49: 9 appendix a 9, Appendix a

97
Operation via a computer
Certain commands and queries (Section 6.2) can be transmitted to the unit using the optional
cable / PC interface.
A computer can be connected to the remote control of the FemtoJet
®
express via one of the
two RS 232 interfaces. Parameters can be entered or read out via the computer.
The computer is connected by the special cable / PC interface cable.
The computer to be connected must comply with EN 60950 / UL 1950 standards.
The serial interface of the computer should be set to the following transmission parameters:
Baud rate:
9,600
Start bit:
1
Dat bits:
8
Parity: non
Stop bit:
2
Only ASCII symbols (incl. CR/LF) which can be represented are transmitted. Therefore a
terminal program, for example, is suitable for remote control.
The commands to be sent are defined with the following structure:
Commands to enter parameters:
"Cxxx=ssssssssss"
Commands to execute and to read out parameters:
"Cxxx"
C: Command
xxx:
Code for the executing command
=:
Separation for the following input parameters
ssssssssss:
Input parameters
In response to any command, the device provides a symbol string of a similar structure:
"Axxx" for answers without output parameter
"Axxx=rrrrrrrrrr" for responses with output parameter
A: Answer
If the command is faulty, an error message is returned instead of the answer:
"ERR=eee"
ERR:
Error
=: Separation
eee:
Error number
Lower and upper case letters can be used.
A.1 Description of interface
A.2 Commands and queries
Appendix A
9 Appendix A
9
09_AnhangA_en.fm Seite 97 Freitag, 29. Juni 2007 2:52 14