Fluke Lawn Mower 2635A Benutzerhandbuch
Computer Operations
Computer Interface Commands and Operation
4
4-13
instances, a terminator is automatically transmitted by the host at the end of the
command string, for example, commands entered in BASIC.
command string, for example, commands entered in BASIC.
Input String Examples
Below are four input string examples. Example 1 - Select function for channel 1 as
ohms, 30-k range, 2-wire connection.
ohms, 30-k range, 2-wire connection.
FUNC 1, OHMS, 3, 2 <CR/LF>
Example 2 - Select function for channel 12 as temperature, using K-type thermocouple.
FUNC 12, TEMP, K <CR/LF>
Example 3 - Select function for channel 7 as temperature, using platinum RTD, 2-wire
connection -and- set a new R0 [0 as in zero] value on the same channel of 101.22.
connection -and- set a new R0 [0 as in zero] value on the same channel of 101.22.
FUNC 7, TEMP, PT, 2;RTD_R0 7, 101.22 <CR/LF>
Example 4 - Set the interval between scans to 10 minutes -and- start scanning -and-
return the most recent measurement values for all scanned channels.
return the most recent measurement values for all scanned channels.
INTVL 0, 10, 0;SCAN 1;LAST? <CR/LF>
Sending Numeric Values to the Instrument
Numeric values can be sent to the instrument as integers, real numbers, or real numbers
with exponents, as shown in the following examples:
with exponents, as shown in the following examples:
+12345Sends the signed integer+12345
123.45Sends the real number123.45
1.2345E+2Sends the number -1.2345 x 102
How the Instrument Processes Output
The instrument outputs alphanumeric character strings in response to a query command
from the host. A query command always ends with "?" (see Tables 4-4 and 4-5). An
instrument output string is terminated by a CR/LF (carriage return/line feed). When the
host sends a string to the instrument, wait for the instrument to return a prompt before
sending another command string. If a second command is sent before the prompt is
returned, a device-dependent command error (!>) is generated and the second string is
ignored. The prompts are in one of three forms:
from the host. A query command always ends with "?" (see Tables 4-4 and 4-5). An
instrument output string is terminated by a CR/LF (carriage return/line feed). When the
host sends a string to the instrument, wait for the instrument to return a prompt before
sending another command string. If a second command is sent before the prompt is
returned, a device-dependent command error (!>) is generated and the second string is
ignored. The prompts are in one of three forms:
=>
The command was executed.
[Example, PRINT 1]
!>
The command was recognized but couldn’t be executed.
[Example, PRINT 3, which has no meaning]
?>
The command was not recognized due to syntax error.
[Example, PRITN 1, spelling error]
Numeric outputs from the instrument are either integer values or scientific notation
values. For example:
values. For example:
The query command RANGE? returns the number 3.
The query command ALARMS? returns the number 0.
A measurement returns +1.2345E+6 (1.2345x106).