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File Structures
1.3 LOGGER SETUP FILES
A log setup may contain the specifications for up to 20 groups. Each group needs information about the
nature of the measurement being taken or channel being controlled and limit tests.
The file contains a
header block and one data record for each channel. There is no descriptor block, so record two contains a
Zero.
The type string is HF AF SSHHHSSHAHMHMHMHSSSS5SHSS, The programs SE TIF and LOG read the
setup records with the following code:
FEAD #1, I+23A1F CI AEF CI C1 CI CECT aa Fol aaFECT a, LECT
FORE J=1 TO & © EERAD #15LCTady @B HEST J
For J=I TO I+268 STEFF Z8 @ READ #1iMEFC0d © HEST J
READ #13SCTaaTECT aa WECTD
The subscript I refers to the group number. The variables are used as follows:
Hl
This variable stores the name of the conversion subprogram to be called if unit
conversions are being used, or the name of the custom subprogram to be called if the
measurement selection is custom program.
The name may be from one to eight
characters long.
HF oe
This variable stores the name of the file containing the subprogram referenced by
H1#% #2. The name may be from 1 to 20 characters long.
Clo®n
This variable contains the first channel number in the HP 3421A to be measured. If
the function is digital byte, this variable contains the number of the slot being read.
Cvs
This variable contains the last channel number in the HP 342 1A to be measured.
Fox
This variable stores the number of the function being measured.
The function
numbers are:
DC Volts
: AC Volts
4-20mA Current
: Two Wire Ohms
Four Wire Ohms
Frequency
: T Thermocouple
E Thermocouple
: J Thermocouple
K Thermocouple
R Thermocouple
: S Thermocouple
: 2K Thermistor (2WQ)
SK Thermistor (2WQ)
RTD (2WQ)
: 2K Thermistor (4WQ)
SK Thermistor (4WQ)
RTD (4WQ)
Digital Bit
Digital Byte
I-5
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