Advantech Advantech Modem ADAM-4550 Manual de usuario descargar pdf (Pagina 6)

ADAM 4000 Series

3-6

ADAM

Programming and Software

ADAM Setup/Utility software

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Simple Configuration

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Easy Programming

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Supported by Major

DA&C Software

Packages

You can use any high-level language

with ASCII-based string functions

(such as C, Pascal or BASIC) to

communicate with ADAM modules or

process their data. For example, the

command and response for an analog

input module would be:

Command:

#05 <CR>

Response: >+4.834 <CR>

This command requests the data stored

by the module with address 05 (Hex).

The module responds with the value

+4.834 V.

Standard Command Set

The ADAM-4011 utilizes a standard

command set for configuration, shown

below (AA is the module's address in

hex):

%AANNTTCCFF Configuration: Sets the

module's address, input range, baud

rate, data format and checksum status

for analog input modules

#AA: Read analog input data

$AA0: Span calibration

$AA1: Offset calibration

$AA2: Read configuration status

@AADI: Read alarm/digital inputs

@AADO: Set digital inputs

@AAHI: Set high alarm limit

@AALO: Set low alarm limit

@AAEAT: Enable alarms

@AARE: Read event counter

Setup/Utility Software (included)

Easy-to-use, menu-driven utility software

makes configuration and calibration a

snap. Its terminal emulation program lets

you easily read from and write to ADAM

modules. Writing application programs

with this software is simple, and you can

learn the basics in just a few minutes.

Rich Application Software Support

Most popular industrial process control

and SCADA software packages support

ADAM, including Labview, InTouch, FIX,

Citect, and GENIE. With these ready-to-

go application software packages,

remote data acquisition, process control,

historical trending and data analysis

require only a few keystrokes. No

programming is necessary.

Error Checking with Checksum

ADAM's built-in checksum feature

ensures data integrity by detecting

communication errors. This feature adds

two checksum characters to every

command or response string, thus

enabling you to verify that the message

received is exactly the same as the

message sent.

Programming Example

The following BASIC program

demonstrates how to communicate with

an ADAM-4011 Analog Input Module

through an ADAM-4520 RS-232 to

RS-485 Converter Module. The program

instructs an ADAM-4011 to measure a

T-Type thermocouple and then display

the result on screen.

10 OPEN “COM1: 9600, N, 8,

1, RS, CS, CD, DS” AS # 1

20 CMD $=”%2324100600"

30 PRINT #1, CMD$ ‘ADAM-4011

is configured to address

24H,T-type TC input, baud

rate of 9600, engineering

unit data format’

40 CMD$=”#24"

50 PRINT #1, CMD$ ‘Read

analog input data’

60 RESULT$=INPUT$ (5, #1)

70 PRINT “Temperature=”;

Result$

80 CLOSE: END

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