Beckhoff C1300 Manuel d'utilisateur télécharger pdf (Page 36)

C1300 VME to II/O Interface Unit Beckhoff II/O-System

Page 36 of 44 Version : 2.01 Date : 18.12.95

3.4.3. Initialisation of "Fast Fiber Optic - Interrupts"

Function 0f

: Transmit interrupt request mask

The interface C1300 has 4 interrupt channels to transmit the 4 interrupt channels

of the II/O-Lightbus to the VME master via the GCB block.

The interrupt bits are generated by any module of the II/O Lightbus in any

occuring telegram frame. The IR- bit field of the control byte transports the

interrupt requests to the interface.

With the help of function 0f

, the interface C1300 is configured. It is possible to

enable a number of interupts from the four channels and to specify the signal type

to generate an interrupt request transmission from the C1300 interface to the VME

system.

Channel Length Function Argument

Argument

Request

07 0f 0m

Criterium

Interrupt-

Channel 0

Criterium

Interrupt-

Channel 1

Criterium

Interrupt-

Channel 2

Criterium

Interrupt-

Channel 3

Response

03 0f 0m

The LOW - nibble in argument 0 specifies, which of the 4 possible Interrupt

channels are enabled.

Example:

m = 00

all interrupt channels disabled ( default )

m = 01

interrupt channel 0 enabled

m = 06

interrupt channels 1 and 2 enabled

m = 0f

interrupt channels 0, 1, 2 and 3 enabled

Every single interrupt channel can be characterized with signal criteria.

Following criterias can be definded:

Criterium Argument code

no interrupt 0

interrupt at signal rise 1

interrupt at signal fall 2

interrupt at signal toggle 3

The argument codes 0 to 3 are defined in the function parameters Argument 1 to 4

for the equivalent interrupt channels.

1 2 ... 31 32 33 34 35 36 37 38 39 40 41 42 43 44

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Beckhoff C1300 Manuel d'utilisateur Page 36

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