Advantech Data Acquisition Modules ADAM 4000 - Manual (Page 223)

Chapter
6
6-9 ADAM 4000 Series User’s Manual
$AA3
Name Trim Calibration command
Description Trim the address of analog output module for a specific
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 which is to be calibrated.
3 is the Trim Calibration Command.
(number of counts) is the 2-character two’s complement
hexadecimal value that represents the number of counts
increasing or decreasing the output current. Each count
equals to approximately 1.5
μA. Values range from 00 to
5F and A1 to FF (hexadecimal). The 00 represents 0 counts,
5F represents +95 counts,
A1 represents -95 counts and FF
represents -1 count. Negative values decrease the output
current according to the number of counts. On the other
hand, the positive values do the opposite.
(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 or
communication error, or even if the specified address does
not exist.
! delimiter character indicates that 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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