Advantech PCL-848A/B Manual de usuario Pagina 40

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34 PCL-848AB User's Manual
Bus Activity :
- The following commands set ATN true then send out the corresponding character.
Mnemonic UNL UNT GET DCL GTL P PPD PPU
ASCII ?
(Hex) (3F) (5F) (08) (14) (01) (05) (70) (15)
Mnemonic SDC SPD SPE TCT *MLA *MTA LLO
ASCII 5 U
(hex) (04) (19) (18) (09) (35) (55) (11)
* My address = 21
The following commands take some actions other than sending characters.
LISTEN Take following values as listener address.
TALK Take following values as talker address.
DATA Set ATN false.
EOI Set EOI true at last data byte.
PPE Take following values as Parallel Poll Config.
IFC Pulse IFC true for 100 microseconds.
CMD Set ATN true.
SEC Take following values as secondary commands.
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