Advantech RS-485 user manual Analog Output Formats, Analog Output Ranges

Data Formats and I/O Ranges

B.4 Analog Output Formats

You can configure ADAM analog output modules to receive data from the host in Engineering Units.

Engineering Units

Data can be represented in engineering units by setting bits 0 and 1 of the data format/checksum/integration time parameter to 0.

This format presents data in natural units, such as milliamps. The Engineering Units format is readily parsed by the majority of computer languages as the total data string length is fixed at six characters: two decimal digits, a decimal point and three decimal digits. The resolution is 5 µA.

Example:

Channel 1 of the analog output module in slot 0 of an ADAM-5000 system at address 01h is configured for a 0 to 20 mA range. If the output value +4.762 mA is desired, the format of the Analog Data Out command would be #01S0C14.762<cr>

B.5	Analog Output Ranges
	Range	Output Range	Data Formats	Maximum	Minimum	Displayed
	Code	Description		Specified	Specified	Resolution
	(hex)			Signal	Signal
			Engineering	20.000	00.000	5 μA
			Units
	30h	0 to 20 mA	% of Span	+100.00	+000.00	5 μA
			Hexadecimal	FFF	000	5 μA
			Binary
			Engineering	20.000	04.000	5 μA
			Units
	31h	4 to 20 mA	% of Span	+100.00	+000.00	5 μA
			Hexadecimal	FFF	000	5 μA
			Binary
			Engineering	10.000	00.000	2.442 mV
			Units
	32h	0 to 10 V	% of Span	+100.00	+000.00	2.442 mV
			Hexadecimal	FFF	000	2.442 mV
			Binary

B-8 ADAM-5000