4-124 ADAM 4000 Series User's Manual
Command Set
4016
$AAE
Name Trim Calibration
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 twos 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 exists.
! delimiter character indicating 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 5,
Calibration, for a detailed description.)
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