User Manual

5-66 ADAM 4000 Series User’s Manual
4016
$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) represe nts the 2-cha racter hexadecimal
address of the strain gauge input module to be calibrated.
E is the Trim Calibration command.
(number of counts) is th e 2-character two ’s co mplement
hexadecimal value that represents the number of counts by
which to in crease or decrease th e output vo ltage. Each
count equals approximately 1mV. Values range from 00 t o
7F and fr om 80 to FF, wh ere 00 represents 0 co unts, 7F
represents 1 27 cou nts, 80 represents - 128 counts a nd F F
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 e rror or if the s pecified a ddress does not
exist.
! delimiter character i ndicates a valid command wa s
received.
AA (range 00-FF) represents the 2-character he xadecimal
address of the strain gauge input module.
(cr) is the terminating character, carriage return (0Dh).
Example com mand: $07E14(cr)
response: ! 07
The com mand t ells t he anal og output o f t he st rain ga uge
input module at add ress 07h to increase its output value by
20 (14h) counts which is appr oximately 20 mV. The strain
gauge i nput module co nfirms the i ncrease. I n o rder t o
perform th is tri m calib ration, a vo ltmeter shou ld be
connected t o the m odule’s o utput. (See al so t he z ero
calibration command and s pan calibration command of the
strain gauge input module and Chapter 8, Calibration, for a
detailed description.)