Eppendorf Innova 43R Incubator Shakers - Manual (Page 76)

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Innova 43 & 43R Incubator Shakers  M1320-0050 Operating manual
12.2 Overview of Command Sets
Using an optional RS-232 interface, the user has the capability to control various
functions of the Innova 43/43R shakers by computer. A detailed command set follows
this introduction.
The serial interface uses an echo character protocol that is implemented to indicate that a
valid character has been received by the shaker. For every character sent by the user
computer, the Innova 43/43R will return a matching character. This echo character
should be read by the computer and compared to the character that was sent.
NOTE:
When you are sending a command, do not allow the pause between any two
characters of your message to last longer than 10 seconds. If it takes any
longer, the shaker’s serial port will reset itself.
In the following example, the
Master (your computer) will command (the C in CS ) the
shaker ( Slave ) to set its speed to 150 RPM:
Master sends: Innova 43/43R responds:
CS<Space>150<CR> CS<Space>150<CR>
In the next example, the Master (your computer) will request that the shaker ( Slave )
report (the R in RV ) the actual parameters:
Master sends: Innova 43/43R responds:
RV<CR> First the echo: RV<CR>
Then the report:
<Arg1><Tab><Arg2><Tab><Arg3>...<Arg7><CR><LF>
NOTE:
On power-up, even if the shaker is not set in Slave mode at the time, the
shaker will always send these four characters: OK<CR><LF> . Before
starting any communications, be sure to clear the computer’s receive buffer.
This is the command set format:
<Command><Space><Arg1><Space><Argn…><Terminator>
Most Commands are defined as two capital characters using standard ASCII format (see
the command sets provided below).
If a command has additional arguments, the ASCII space control character separates each
argument. The command is terminated using the ASCII carriage return control character;