Advantech PCL-734 Manual de usuario Pagina 20

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16 PCL-734 User's Manual
Programming the PCL-734 is extremely simple. Each output channel
correspondstoabitinthecard'sregisters.Toturnonanoutput
channelyouwritea1tothecorrespondingbit.
ThecardrequiresfourI/Oregisteraddresses.Theaddressofeach
registerisspecifiedasanoffsetfromthecard'sbaseaddress.For
example, BASE+0 is the card's base address and BASE+2 is the base
address+twobytes.Ifthecard'sbaseaddressis300h,theregister's
addressis302h.SeeChapter2forinformationonsettingthecard's
baseaddress.
Registerassignmentsareasfollows:
WriteWrite
WriteWrite
Write
ReadRead
ReadRead
Read
BASE+0 IDO bits 0-7 N/A
BASE+1 IDO bits 8-15 N/A
BASE+2 IDO bits 16-23 N/A
BASE+3 IDO bits 24-31 N/A
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