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20
Serial Port Communication
Setting Up Serial Communication via HyperTerminal
The Dynacalibrator Model 340 can be monitored and controlled remotely by
means of a serial port connection and a terminal emulation program such as
®
HyperTerminal.
The unit is controlled by entering two-character commands, shown in the table
below. Commands may be either upper case or lower case. Parameters enclosed
in brackets ([ ]) are optional. Note that for enable/disable commands, the states
indicated by an "*" are the defaults at power-up. Only the altered set point tem-
perature and function coefficients are retained when power is off and restored at
power-up.
Command
DC[ [=] n ]
Show/set decimation count
(Data logging rate, in seconds)
L+
Start data logging
(Log data at the interval set by the decimation count:
DC=1 sets a one second interval)
L-
Stop data logging*
P+
Enable front panel control*
P-
Disable front panel control
(Prevent set point from being changed with panel controls)
SC
Show coeffecients
TE
Read environment temperature
TR
Read controlled temperature
TS[ [=] n ]
Show/set temperature setpoint
VR
Show firmware version
??
Display the list of available commands
* Factory defaults, reset at start-up
1. To open HyperTerminal in Windows
Communications > HyperTerminal. The following screen will appear:
Meaning
®
®
, click Start > Programs > Accessories >
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