Measurement-computing Micro488/p Manual do Utilizador descarregar pdf (Página 40)

A-2

09-26-02

Appendix A, Micro488/p Command Summary

Command Code Description Page

LOCAL L[;addr] Without optional address, instructs the Micro488/p to un-assert the

Remote Enable line causing devices on the bus to return to manual

operation; with optional address, places bus device in the local mode by

the Go To Local (GTL) bus command.

3-14

LOCAL LOCKOUT LL Instructs the Micro488/p to issue a Local Lockout IEEE bus command. 3-15

OUTPUT O;cmd$

O;addr;cmd$

Sends data to the IEEE bus. 3-15

REMOTE RE[;addr] Asserts the Remote Enable (REN) bus management line. 3-16

RESUME RS Un-asserts the Attention (ATN) bus signal; removes the Micro488/p

from the active controller state and allows transfers between two

peripheral devices.

3-16

SERIAL POLL SP;addr Performs a serial poll of the bus device specified; responds with a

number from 0 to 255 representing the decimal equivalent of the eight-

bit device response.

3-17

SERIAL

TERMINATOR

TC;n Sets the end-of-line terminators for input from the serial host. 3-17

SRQ CHECK SQ Inquires whether or not the SRQ line on the IEEE bus is currently being

asserted.

3-18

TRIGGER TR[;addr] Issues a Group Execute Trigger (GET) bus command to the specified

device; if no address is specified, then GET affects those devices already

in the listen state.

3-18

XOFF/XON X;n Enables or disables XON/XOFF handshaking. 3-19

XOFF <CTRL>S

CHR$1(9)

Temporarily inhibits serial transmission from the Micro488/p. 3-19

XON <CTRL>Q

CHR$1(17)

Restarts serial transmission from the Micro488/p. 3-20

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Measurement-computing Micro488/p Manual do Utilizador Página 40