Advantech Data Acquisition Modules ADAM 4000 User Manual
Page 167
Chapter
5
5-21
ADAM 4000 Series User’s Manual
4011, 4011D, 4012, 4013,
4015, 4015T, 4016
$AA4
Name
Read Synchronized Data command
Description
Returns the input value that was stored in the addressed
module’s register, after a Synchronized Sampling command
#** was issued.
Syntax
$AA4(cr)
$
is a delimiter character.
AA
(range 00-FF) represents the 2-character hexadecimal
address of the analog input module from which data is to be
sent.
4
is the Read Synchronized Data command.
(cr)
is the terminating character, carriage return (0Dh).
Response
!AA(status)(data)(cr)
if the command was valid.
?AA(cr)
if an invalid operation was entered.
There is no response if the module detects a syntax error or
communication error or if the specified address does not
exist.
!
delimiter character indicates a valid command was
received.
AA
(range 00-FF) represents the 2-character hexadecimal
address of the analog input module that is responding.
(status)
will tell you if the data (data) from the last
Synchronized Sampling command (#**) has already been
sent. If status = 1, then the data has been sent for the first
time since a Synchronized Sampling command was issued.
If status = 0, then the data has been sent at least once
before.
(data)
a value
stored in a special register of the interrogated
module in the configured data format. It has been sampled
by the module after a Synchronized Sampling command.
(For possible data formats, see Appendix B, Data Formats
and I/O Ranges)
(cr)
represents terminating character,
carriage return (0Dh).