Advantech Data Acquisition Modules ADAM 4000 - Manual (Page 249)

Digital I/O and Relay Output
Counter/Frequency Command Set
7-14 ADAM 4000 Series User’s Manual
$AA2
Name Configuration Status command
Description Returns the configuration parameters of the digital I/O
module.
Syntax $AA2(cr)
$ is a delimiter character.
AA (range 00-FF) represents the 2-character hexadecimal
address that you will access to.
2 is Configuration Status command.
(cr) is the terminating character, carriage return (0Dh).
This command requests the return of the configuration data
from the digital I/O module at address AA.
Response !AATTCCFF(cr) if the command is valid.
?AA(cr) if an invalid command has been issued.
There is no response if the module detects a syntax or
communication error, or even if the specified address does
not exist.
! is a delimiter character which indicates a valid command.
? is a delimiter character which indicates an invalid
command.
AA (range 00-FF) represents the 2-character hexadecimal
address of the module.
TT represents the type of code, which is always 40.
CC represents the baud rate codes.
(Refer to Table 7-2 on next page).
The hexadecimal number FF which is converted to a 8-bit
parameter represents the checksum and protocol status .
Bits 3 through 5 and bit 0, 1, 7 are not used, so they are
set to 0. (Refer to Figure 7-2 on next page)
Bit 6 is the selection of checksum and bit 2 is the selection
of protocol (0: advantech, 1: modbus).
(Modbus protocol is supported by ADAM-4051, 4055,
4056S, 4056SO, 4068 only)
(cr) is the terminating character, carriage return (ODh).
4050, 4051, 4052, 4053, 4055,
4056S, 4056SO, 4060, 4068, 4069