Measurement-computing Micro488/p Manual de usuario descargar pdf (Pagina 22)

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09-27-02

Command Descriptions

3.2.2 Response

This portion of the command description describes the response that the user's

program should read from the serial host's COM port after sending the command. If

a response is provided, it must be read to maintain proper program seqence.

3.2.3 Bus States

This portion of the command description describes the bus command and data

transfers using IEEE bus mnemonics as listed in the following table.

Bus States DIO lines

87654321

ATN Attention

data Data String

DCL Device Clear

x 0 0 1 0 1 0 0

GET Group Execute Trigger

x0001000

GTL Go To Local

x 0 0 0 0 0 0 1

IFC Interface Clear

LAG Listen Address Group

x 0 1 a d d r n

LLO Local Lock Out

x0010001

MLA My Listen Address

x 0 1 a d d r n

MTA My Talk Address

x10addr n

REN Remote Enable

SDC Selected Device Clear

x0000100

SPD Serial Poll Disable

x 0 0 1 1 0 0 1

SPE Serial Poll Enable

x 0 0 1 1 0 0 0

SRQ Service Request

TAG Talker Address Group

x10addr n

UNL Unlisten

x 0 1 1 1 1 1 1

UNT Untalk

x1011111

x = "don't care"

addrn = IEEE bus address “n”

1 2 ... 17 18 19 20 21 22 23 24 25 26 27 ... 43 44

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Measurement-computing Micro488/p Manual de usuario Pagina 22

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