Omega Engineering OMB-CHARTSCAN 1400 User Manual page 224

Appendix C
Centigrade:
Fahrenheit :
Rankine:
Kelvin :
For channels configured as thermocouples, all ASCII readings will be returned in the format which corresponds
with the engineering unit selected. The formats are as follows, where X is an ASCII digit.
Centigrade :
Fahrenheit :
Rankine :
Kelvin :
Volts
The default units and resolution are dependent on the low or high volts range:
Low Range
±100 mV
±1 V
±5 V
±10 V
The default binary format returns 2 bytes of 2's complement binary data with the user selecting low/high byte or
high/low byte.
For Volts channels all ASCII readings will be of the form:
±XXX.XXXXXXX
Time/Date Stamp
Time/Date values have the following ASCII format:
hh:mn:ss.t,mm,dd,yy
hh:mn:ss.t,mm,dd,yy
Value
hh (00< hh <23)
mn (00< mn < 59)
ss (00< ss < 59)
t (00< t < 9)
Time/Date stamp output values occur within HLL and acquisition buffer output queries. Time/Date stamp
output values have the same ASCII format as Time/Date with exception of the fourth value. For Time/Date
stamp the value is mss (milli-seconds) where: (000< mss < 999).
An example:
01:25:20.600,2/28/99
ChartScan User's Manual
-3276.7 < C < +3276.7
F = (9/5)C + 32
R = (9/5)C + 491.69
K = C + 273.16
XXXX.XX
XXXX.XX
XXXX.XX
XXXX.XX
Resolution
3.12 µV/bit
31.21 µV/bit
156.06 µV/bit
312.12 µV/bit
where is an ASCII digit
X
Description
hour
minute
seconds
tenth of
seconds
20.6 seconds after 1:25 AM, on Feb. 28
=
Note: R = F + 459.69
High Range Resolution
±2.5 V 78.75 µV/bit
±25 V 787.46 µV/bit
±250 V 7.87 mV/bit
hh:mn:ss.t,mm,dd,yy
Value
mm (01< mm< 12)
dd (valid by month)
yy (00 < yy < 99)
Registers, Data Formats, & Queries
Description
month
day
year
th
, 1999
C-7