Campbell Scientific CR10X Measurement and Control System - Manual (Page 141)

SECTION 9. INPUT/OUTPUT INSTRUCTIONS
9-9
To skip the measurement portion of Instruction
14 and apply the CSI polynomials to a millivolt
value in an input location, index parameter three,
input channel. The input location where the
thermocouple output (mV) is located is now
defined by parameter three. The thermocouple
must be measured with Instruction 2.
PARAM. DATA
NUMBER TYPE DESCRIPTION
01: 2 Repetitions
02: 2 Range code (Table 9-5, 9-1)
03: 2 Differential channel
number for first TC
(when indexed (--),
becomes an input
location containing
voltage measurement)
04: 2 TC type code (Table
9-4)
05: 4 Reference temperature
location
06: 4 Input location number
07: FP Multiplier
08: FP Offset
Input locations altered: 1 per repetition
*** 15 CONTROL PORT SERIAL I/O ***
FUNCTION
Send and receive serial data through the
CR10X control ports, see Appendix B for details
on using Instruction 15.
*** 16 TEMPERATURE FROM ***
PLATINUM R.T.D.
FUNCTION
This instruction uses the result of a previous RTD
bridge measurement to calculate the temperature
according to the DIN 43760 specification adjusted
(1980) to conform to the International
Electrotechnical Commission standard. The range
of linearization is -200° to 850°C. The error in the
linearization is less than 0.001°C between -100°
and +300°C, and is less than 0.003°C between -
180° and +830°C. The error (T calculated - T
standard) is +0.006° at -200°C and -0.006° at
+850°C. The input must be the ratio R/Ro, where
R is the RTD resistance and Ro the resistance of
the RTD at 0°C (Sections 7.9 and 7.10). A
multiplier of 1 and an offset of zero yields
temperature in degrees Celsius.
PARAM. DATA
NUMBER TYPE DESCRIPTION
01: 2 Repetitions
02: 4 Input location number
of R/Ro
03: 4 Input location number
of result
04: FP Multiplier
05: FP Offset
Input locations altered: 1 per repetition
*** 17 INTERNAL TEMPERATURE ***
FUNCTION
This instruction measures the temperature (°C)
of a thermistor on the CR10X analog board.
This temperature is generally not adequate for
use as the thermocouple reference temperature
(Section 13.4).
PARAM. DATA
NUMBER TYPE DESCRIPTION
01: 4 Input location number
for temperature
Input locations altered: 1
*** 18 MOVE TIME TO INPUT LOCATION ***
FUNCTION
This instruction takes the current time in
seconds into the minute, minutes into the day,
or hours into the year and does a modulo divide
(see Instruction 46) on the time value with the
number specified in the second parameter. The
result is stored in the specified input location.
Entering 0 or a number which is greater than
the maximum value of the time for the second
parameter will result in the actual time value
being stored.
PARAMETER 1 OPTION CODES
Code Time Units
0 Seconds into minute (maximum 60)
1 Minutes into current day (maximum
1440)
2 Hours into current year (maximum
8784)
3 Store yr,day,hr,min,sec into 5 input
locations (modulo divide not used)
The year is four digits (e.g., 1999).