ADAM-4000 Series User Manual 172
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5.4.4 $AAE
Name Trim Calibration command
Description Trims the output voltage of the strain gauge input module a
specified number of units up or down.
Syntax $AAE(number of counts)(cr)
$ is a delimiter character.
AA (range 00-FF) represents the 2-character hexadecimal
address of the strain gauge input module to be calibrated.
E is the Trim Calibration command.
(number of counts) is the 2-character two’s complement
hexadecimal value that represents the number of counts by
which to increase or decrease the output voltage. Each
count equals approximately 1mV. Values range from 00 to
7F and from 80 to FF, where 00 represents 0 counts, 7F
represents 127 counts, 80 represents -128 counts and FF
represents -1 counts. Negative values decrease and positive
values increase the output voltage according to the number of counts.
(cr) is the terminating character, carriage return (0Dh).
Response !AA(cr) if the command is valid.
There is no response if the module detects a syntax error or
communication error or if the specified address does not exist.
! delimiter character indicates a valid command was received.
AA (range 00-FF) represents the 2-character hexadecimal
address of the strain gauge input module.
(cr) is the terminating character, carriage return (0Dh).
Example command: $07E14(cr)
response: !07
The command tells the analog output of the strain gauge
input module at address 07h to increase its output value by
20 (14h) counts which is approximately 20 mV. The strain
gauge input module confirms the increase. In order to
perform this trim calibration, a voltmeter should be
connected to the module’s output. (See also the zero
calibration command and span calibration command of the
strain gauge input module and Chapter 8, Calibration, for a
detailed description.)
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