SRS Labs CTC100, Руководство пользователя

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Operation 18
CTC100 Programmable Temperature Controller
2. Optional: the default baud rate for the FTDI driver is 9600. For faster communication,
change the baud rate to 230400 on both the PC and the CTC100. On the CTC100, press the
Setup key, touch the System tag
. Select 230400. On the PC,
change the baud rate setting in
setting, open the Device Manager and expand the Ports line. Plug the CTC100 into the PC
and look for a new port to appear. Double-click that port, select the Port Settings tab, and
3. The CTC100 should now appear as a COM port on your computer, and your programs can
use the USB connection in the same way that they use an RS-232 connection.
R ead data from the C TC 100
All RS-232, GPIB, USB, and Ethernet messages sent to the CTC100 must end with a linefeed
\ CTC100 will not process the message until the linefeed is
received. Instructions are not case-sensitive.
The most recent value (i.e., the value read at the most recent ADC conversion) of a single
channel can be queried by sending the name of the channel, followed by a question mark. Omit any
spa
or example, to query the value of cha
command
Out1?
. The CTC100 replies with a value such as
Out1?
0.00000
The most recent value of all channels can be retrieved with a single
getOutput
instruction (the
question mark is optional in this case):
getOutput?
29.98424, 25.86019, 27.49236, NaN, NaN, NaN, 0.000000, 10.04576,
10.04574, 10.04572, NaN, NaN, NaN, 0, 0
Sensors that are disconnected or out of range (not a number). To
determine the order in which the channels are listed, send a
getOutputNames
query:
getOutputNames?
In 1, In 3, In 2, In 4, Out 1, Out 2, AIO 1, AIO 2, AIO 3, AIO 4,
V1, V2, V3, DIO, Relays
Data can also be read with the
getLog
instruction, which returns logged data. Logged values are
typically the average of three ADC conversions and have less noise than the values returned by
getOutput
and
channel ?
, both of which return the result from the single most recent ADC
conversion only. In addition,
getLog
makes it easier to retrieve data at consistent time intervals.
For example, begin by sending this command, which retrieves the last point in channel In 1
getLog "In 1", last
27.53936
Next, send the following command:
getLog "In 1", next
27.57375
Each time this command is sent, the CTC100 sends the next data point in the log, if necessary
waiting for a new point to be added.