Advantech Data Acquisition Modules ADAM 4000 Manual de usuario descargar pdf (Pagina 248)

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Chapter 7

ADAM 4000 Series User’s Manual

$AA4

(dataOutput)

two-character hexadecimal value which is

either the feedback of a digital output channel or a relay.

(dataInput) two-character hexadecimal value representing

the input values of the digital I/O module.

(cr) is the terminating character,

carriage return (0Dh).

Example command:

$064(cr)

response:

!1055100(cr)

The command asks the ADAM-4050 digital I/O module at

address 06h to send its digital input data that was gathered

during the last Synchronized Sampling command. The

module returns the value 1055100 with status equals to 1

which also represents that data have not been sent before.

From inspection, the value has dataOutput = 05h

(00000101), ON for digital output channels 0 and 2 and

OFF for channels 1, 3, 4, 5, 6, 7. It also has dataInput = 51h

(01010001) which represents HIGH for digital input

channels 0, 4, 6 and LOW for channels 1, 2, 3, 4, 5.

The digital I/O module responds with data = 055100 and

status = 1. These mean that the data has been sent for the

first time.

command:

$064(cr)

response:

!0055100(cr)

The command asks the digital I/O module at address 06h to

send its digital input data.

The digital I/O module responds with data = 055100 and

status = 0, which means that it has sent the same data at

least once before. This may also indicates that a previous

Synchronized Sampling command was not received!

4050, 4051, 4052, 4053,

4055, 4060, 4068,

1 2 ... 243 244 245 246 247 248 249 250 251 252 253 ... 428 429

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