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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

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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