Omega Engineering OMB-CHARTSCAN 1400, Руководство пользователя

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Appendix C Registers, Data Formats, & Queries
ChartScan User’s Manual C-7
Centigrade: -3276.7 < C < +3276.7
Fahrenheit : F = (9/5)C + 32
Rankine: R = (9/5)C + 491.69 Note: R = F + 459.69
Kelvin : K = C + 273.16
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 :
XXXX.XX
Fahrenheit :
XXXX.XX
Rankine :
XXXX.XX
Kelvin :
XXXX.XX
Volts
The default units and resolution are dependent on the low or high volts range:
Low Range Resolution High Range Resolution
±100 mV 3.12 µV/bit ±2.5 V 78.75 µV/bit
±1 V 31.21 µV/bit ±25 V 787.46 µV/bit
±5 V 156.06 µV/bit ±250 V 7.87 mV/bit
±10 V 312.12 µV/bit
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
where
X
is an ASCII digit
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 hh:mn:ss.t,mm,dd,yy
Value Description Value Description
hh (00< hh <23) hour mm (01< mm< 12) month
mn (00< mn < 59) minute dd (valid by month) day
ss (00< ss < 59) seconds yy (00 < yy < 99) year
t (00< t < 9) tenth of
seconds
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 =
20.6 seconds after 1:25 AM, on Feb. 28
th
, 1999