Advantech 5000 Series user manual Aammcr if the command is valid

	Command Set		5017/5018
			Analog Input
	$aaSi6
	Name	Read Channels Status
	Description Asks a specified input module to return the status of all
		channels
	Syntax	$aaSi6(cr)
		$ is a delimiter character.
		aa (range 00-FF) represents the 2-character hexadecimal
		address of the ADAM-5000 system you want to
		interrogate.
		Si identifies the I/O slot of the system you want to read
		channels status. The channel status defines whether a
		channel is enabled or disabled.
		6 is the read channels status command.
		(cr) is the terminating character, carriage return (0Dh)
	Response	!aamm(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
		or 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.
		mm are two hexadecimal values. Each value is interpret-
		ed as 4 bits. The first 4-bit value represents the status of
		channels 4-7, the second 4 bits represents the status of
6-44			ADAM-5000