Advantech Data Acquisition Modules ADAM 4000 User Manual page 229

4021
$AA8
Name Current Readback command
Description The addressed analog output module is instructed to
measure the current flowing through its current/voltage
loop and return the measured data in the module's
configured data format. The value returned may be a rough
estimate of the real value.
Syntax $AA8(cr)
$
AA
address of the analog output module that you want to
retrieve the data from. The data are current/voltage loop.
8
(cr)
Response !AA(data)(cr)
?AA(cr)
There is no response if the module detects a syntax or
communication error, or even if the specified address does
not exist.
!
received.
?
invalid.
AA
address of the analog output module.
(data)
(cr)
Example command: $0A8(cr)
response:
The command tells the analog output module at address
0Ah to measure its current loop and return the measured
value.
The analog output module returns the value 18.773 mA.
6-15 ADAM 4000 Series User's Manual
is a delimiter character.
(range 00-FF) represents the 2-character hexadecimal
is the Current feedback command.
is the terminating character, carriage return (0Dh).
if the command was valid.
if an invalid command was issued.
delimiter character indicates that a valid command was
delimiter character indicates that the command was
(range 00-FF) represents the 2-character hexadecimal
is the value returned by the analog output module.
is the terminating character, carriage return (0Dh).
!0A18.773(cr)
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