User Manual

Chapter 5
5-67 ADAM 4000 Series User’s Manual
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$AAA
Name Zero Calibration command
Description Stores t he vol tage output va lue of the a ddressed strai n
gauge input module as zero voltage reference.
Syntax $AAA(cr)
$ is a delimiter character.
AA (range 00-FF) represents the 2-character he xadecimal
address of t he st rain gauge i nput m odule w hose output
channel is to be calibrated.
A is the Zero Calibration command.
(cr) is the terminating character, carriage return (0Dh)
Response !AA(cr) if the command is valid.
?AA(cr) if an invalid command was issued.
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.
? delimiter character indicates the command was invalid.
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).
Before issu ing th e Zero Calib ration co mmand, t he an alog
output should b e trimmed to th e co rrect value with the
Trim C alibration c ommand. A v oltmeter s hould be
connected t o t he m odule’s o utput channel. (See also the
strain gauge i nput m odule’s Tri m C alibration c ommand
and Chapter 8, Calibration, for a detailed description.)