Rockwell-automation 1771-DMC_DMC1_DMC4_DXPS Control Coprocessor User M Manual do Utilizador descarregar pdf (Página 107)

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unsigned char pccc_rpl[275];

void main( int argc, char** argv ){

unsigned long iostat; /* function completion value */

unsigned long rpl_siz; /* size of pccc reply */

DTSA_BKPLN addr; /* structured address */

DTL_INIT( 1 ); /* Initialize the Data Table Library */

DTL_C_CONNECT( NI_ID, HOSTNAME, 0); /* Connect */

addr.atype = DTSA_TYP_BKPLN;

addr.ni_id = NI_ID;

rpl_siz = sizeof (pccc_rpl); /* size of response buffer */

DTL_PCCC_DIRECT_W ((DTSA_TYPE *) &addr, pccc_read, sizeof (pccc_read),

pccc_rpl, &rpl_siz, 0, 0, &iostat, 60000); /* do typed read */

display_tag(); /* show the result of the read */

rpl_siz = sizeof (pccc_rpl); /* size of response buffer */

DTL_PCCC_DIRECT_W ((DTSA_TYPE *) &addr, pccc_color, sizeof (pccc_color),

pccc_rpl, &rpl_siz, 0, 0, &iostat, 60000); /* typed write to color 0x99 */

rpl_siz = sizeof (pccc_rpl); /* size of response buffer */

DTL_PCCC_DIRECT_W ((DTSA_TYPE *) &addr, pccc_read, sizeof (pccc_read),

pccc_rpl, &rpl_siz, 0, 0, &iostat, 60000); /* do typed read */

display_tag(); /* show the result of the read - note color = 0x99*/

rpl_siz = sizeof (pccc_rpl); /* size of response buffer */

DTL_PCCC_DIRECT_W ((DTSA_TYPE *) &addr, pccc_col_year, sizeof (pccc_col_year),

pccc_rpl, &rpl_siz, 0, 0, &iostat, 60000); /* write to color and year */

rpl_siz = sizeof (pccc_rpl); /* size of response buffer */

DTL_PCCC_DIRECT_W ((DTSA_TYPE *) &addr, pccc_read, sizeof (pccc_read),

pccc_rpl, &rpl_siz, 0, 0, &iostat, 60000); /* do typed read */

display_tag(); /* show the result of the read - note color = 0x99 */}

display_tag (){

/* since the pccc ”byte stream” from the coprocessor might put unsigned

variables on uneven address boundries we move them to a temporary union

variable before storing them */

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