Rockwell-automation 1747-PCIS API Software - Open Controller Manual do Utilizador descarregar pdf (Página 102)

Publication 1747-UM002A-US-P - June 2000

6-42 Library of Routines

The shared memory segment address must be set to an address that

does not conflict with other hardware and software. The

recommended segment address is 0xC800. You can use any of the

following shared segment addresses (listed in hex):

• C000 - D000

• C200 - D200

• C400 - D400

• C600 - D600

• C800 - D800

• CA00 - DA00

• CC00 - DC00

• CE00 - DE00

irqnum defines the ISA-bus interrupt number assigned to the scanner.

irqnum must be set to one of the values listed in the table below or

the scanner cannot be opened. The MS-DOS API library

communicates with the scanner via interrupts and installs an interrupt

service routine for the interrupt. The application must not service

these interrupts.

The IRQ assignment must be set to an interrupt that does not conflict

with other hardware and software. The recommended interrupt

assignment is IRQ11.

Return Value:

irqnum: IRQ assignment:

10 IRQ10

11 IRQ11

12 IRQ12

14 IRQ14

15 IRQ15

Name: Value: Description:

SUCCESS 0 scanner was opened successfully

ERR_OCOPEN 1 scanner is already open

ERR_OCPARAM 2 invalid value in segaddr or irqnum

ERR_OCMEM 3 shared memory not found

1 2 ... 97 98 99 100 101 102 103 104 105 106 107 ... 173 174

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Rockwell-automation 1747-PCIS API Software - Open Controller Manual do Utilizador Página 102