4-134 ADAM 4000 Series User's Manual
Command Set
4021
$AA3
Name Trim Calibration
Description Trims the addressed analog output module a specified number
of units up or down.
Syntax $AA3(number of counts)(cr)
$ is a delimiter character.
AA (range 00-FF) represents the 2-character hexadecimal
address of the analog output module to
be calibrated.
3 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 current. Each count
equals approximately 1.5 µA.
Values range from 00 to 5F and
from A1 to FF (hexadecimal),
where 00 represents 0 counts, 5F
represents +95 counts,
A1 represents -95 counts and FF
represents -1 count. Negative values decrease and positive
numbers increase the output current 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 analog output module.
(cr) is the terminating character, carriage return (0Dh)
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