Advantech PCL-848A/B Manuel d'utilisateur télécharger pdf (Page 37)

CHAPTER 3 PROGRAMMING REFERENCE

3.4.14. PPOLLU

Purpose:

This command executes a Parallel Poll Unconfigure. It directs a device to not

respond to a parallel poll. It can e be addressed to the interface bus or to a specific

device.

Offset:

PPOLLU%=30

Syntax:

CALL PPOLLU%(ADDR%) ----BASIC

CALL ABSOLUTE(ADDR%,PPOLLU%) ----BASIC Compiler

Parameter:

ADDR’ - The address of the device to be unconfigured. If s 0 <= addr <= 30, the

specified device is uncon figured. Otherwise, all the devices are unconfig-

ured.

Bus Activity:

- If 0 <= addr <= 30

ATN is set true.

UNL is sent.

LAD is sent.

MTA is sent.

PPC is sent.

PPD is sent.

- If addr < 0 or addr > 30

ATN is set true.

PPU is sent.

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Advantech PCL-848A/B Manuel d'utilisateur Page 37