Appendix A API Commands
ChartScan User’s Manual A-7
Command
Syntax
Description
D#
Set Relay Make Time
D#make
Specify how long to wait after closing a channel relay before
reading valid data, where make is the number of 520.833
microsecond intervals.
E
End Calibration Mode
E
Terminate Calibration Mode
E?
Error Status Query
E?
Returns present error condition of the unit with one of the following
error codes:
E000 - No error has occurred.
E001 - Invalid device dependent command (IDDC).
E002 - Invalid device dependent command option (IDDCO).
E004 - Channel configuration error.
E008 - Calibration error.
E016 - Trigger overrun.
E032 - Open TC or Range Error.
E128 - Command conflict error.
F
Set Data Format
Fengr,
format
Configure the input and output formats.
engr converts the raw data to the engineering units that you
prefer to work with. Valid options are: 0 - degrees Celsius
(default), 1 - degrees Fahrenheit, 2 - degrees Rankine, 3 -
degrees Kelvin, and 4 - Volts.
format places the readings in a format that you prefer to work
with. Valid options are: 0 - Engineering Units (default), 1 -
Binary (Low Byte/High Byte), 2 - Binary (High Byte/Low Byte),
and 3 - Counts (ASCII).
F?
Query the data format.
F#
Set Burst Mode
Frequency
F#freq
Select burst mode sampling frequency where freq is a real
number and where 38.5 < freq < 20000.0 Hertz (default).
G
Calibrate Channel Gain
Gchan,
type
Calibrate the correction gain constants for given option card where
chan is the channel number such that
1 < chan < max,
where max = 128 for ChartScan/1400.
The chassis is chan = 0.
type is the channel type.
H
Calibrate Channel
Offset
Hchan
Calibrate the correction offset constants for given option card
where chan is the channel number such that
1 < chan < max, where max = 128 for ChartScan/1400.
The chassis is chan = 0.
I
Set Scan Interval
Inorm, acq
Set the two configurable scan intervals of the unit where norm
and acq are the normal and acquisition scan intervals which
have the form: hh:mm:ss.t where hh is hours, mm is
minutes, ss is seconds, and t is tenths of a second.
I?
Query scan interval selection.
I#
Digital Input Stamping
I#state
Specify whether or not digital input stamping will be enabled.
state may have either of the following values: The default of
0, which disables digital input stamping, or 1 to enable digital
stamping.
J
Calibrate Cold Junction
Offset
Jchan,
type,
temp
Calibrate the cold-junction offsets for cold-junction compensation
of the thermocouple signals where chan is the channel number
such that 1 < chan < max,
where max = 128 for ChartScan/1400.
type is the thermocouple channel type.
temp is the reference temperature currently being applied to the
selected channel, with the form nnn.n in degrees º C.
K
Enter Calibration Mode
Kkey
Enter Calibration Mode if the keyword (or password) is correct,
where key is the keyword in the form of a 5-digit number
nnnnn. Therefore the password can be no longer than 5
characters.
K?
Query Kkey as defined above.