Advantech RS-485 user manual Aa range 00-FF represents the 2-character

		5080 Counter/
Command Set		Frequency Module
$aaF		$aaF
Name	Read Firmware Version
Description	Returns the firmware version code from a specified
	ADAM-5000 system.
Syntax	$aaF(cr)
	$ is a delimiter character.
	aa (range 00-FF) represents the 2-character
	hexadecimal address of the ADAM-5000 system you
	want to interrogate.
	F is the command for reading Firmware Version.
	(cr) is the terminating character, carriage return (0Dh).
Response	!aa(version)(cr) if the command is valid.
	?aa(cr) if an invalid operation was entered.

There is no response if the module detects a syntax error, communication error or if the specified address does not exist.

! delimiter character indicating a valid command was received.

? delimiter character indicating the command was invalid.

aa (range 00-FF) represents the 2-character hexadecimal address of an ADAM-5000 system.

(version) represents the firmware version of the ADAM-5000 system.

(cr) is the terminating character, carriage return (0Dh).

6-120 ADAM-5000