Appendix 6 User Definitions Of Thermocouples And Rtds - YOKOGAWA 2560A User Manual

Appendix 6 User Definitions of Thermocouples and RTDs

Creating Data
User-defined data is created in text format as shown in the figure below. User-defined data contains
characters that indicate the type for distinguishing user definitions (type characters), upper and lower
limits of temperature ranges, coefficients of polynomials, and the like. For details on the syntax, see
"Definition Specifications" later in this section.
The following webpage provides user-defined data samples.
http://www.yokogawa.com/jp-ymi/tm/Bu/2560A/
Line 1
Line 2
(First
temperature
range)
Line 3
(Second
temperature
range)
Files That Are Saved
The data that you create is saved as a definition file. The definition file name is fixed. The name is not
case sensitive.
• TC USER definition file name: TCUSER.TXT
• RTD USER definition file name: RTDUSER.TXT
Writing to the 2560A
Write the user-defined data from a definition file to the 2560A using the USB mass storage feature.
Before the data is written, the 2560A checks for errors in the data. If there are no errors, the data will
be written to the 2560A's internal memory. If data is already written, it is updated. If there is an error,
the contents in the internal memory will not be updated.
Writing with Communication Commands
You can use communication commands to write user-defined data to the 2560A. A character string
is sent for each temperature range using communication commands. A character string must be
enclosed in single quotation marks or double quotation marks. To use communication commands to
source the thermoelectromotive force or resistance according to the user-defined data, a sequence
of commands needs to be executed. For details, see the description of the :SOURce:RTD:DEFine
or :SOURce:TCouple:DEFine command in the SOURce group.
Example: A character string sent using a communication command
'0, 10, 0.00E+00, 1.00E+00, 2.00E+00'
"0, 10, 0.00E+00, 1.00E+00, 2.00E+00"
App-10
TYPE:L
Type character (1 character)
Upper limit of range
0, 10, 0.00E+00, 1.00E+00, 2.00E+00
Lower limit 0th order
of range coefficient
Upper limit of range
10, 20, 0.1E+00, 1.10E+00, 2.10E+00
Lower limit 0th order
of range coefficient
Data in text format
1st order
coefficient
1st order
coefficient
2nd order
coefficient
2nd order
coefficient
IM 2560A-01EN