TagRead from PLC became slow...

Hi there,

I've written this C code for coping PLC values in Memory Tags (960word).

Due to a very slow performances I have create 4 pushbuttons and for each oneI have associatethe following code (substitute P1 (in sourcetage & destinetag) for the 1st pb - P2 for the 2nd etc etc.).

int charge,injector,step;
char SourceTag[50], DestineTag[50];
float SourceValue;

printf("Function ReadFromPlc\r\n");
printf("- Charge n° 1\r\n");
for (injector=1;injector<5;injector++)
{
printf("Injector n° %d\r\n",injector);
for (step=1;step<11;step++)
{
sprintf(SourceTag,"Inj%d_WC_P1CH4S%d",injector,step );
sprintf(DestineTag,"Inj%d_MR_P1CH4S%d",injector,step );
SourceValue= GetTagFloat(SourceTag);
SetTagFloat(DestineTag,SourceValue);

sprintf(SourceTag,"Inj%d_WC_P1O2S%d",injector,step );
sprintf(DestineTag,"Inj%d_MR_P1O2S%d",injector,step );
SourceValue= GetTagFloat(SourceTag);
SetTagFloat(DestineTag,SourceValue);

sprintf(SourceTag,"Inj%d_WC_P1NRGS%d",injector,step );
sprintf(DestineTag,"Inj%d_MR_P1NRGS%d",injector,step );
SourceValue= GetTagFloat(SourceTag);
SetTagFloat(DestineTag,SourceValue);
}
}

for (injector=5;injector<8;injector++)
{
printf("Injector n° %d\r\n",injector);
for (step=1;step<11;step++)
{
sprintf(SourceTag,"Inj%d_WC_P1CH4S%d",injector,step );
sprintf(DestineTag,"Inj%d_MR_P1CH4S%d",injector,step );
SourceValue= GetTagFloat(SourceTag);
SetTagFloat(DestineTag,SourceValue);

sprintf(SourceTag,"Inj%d_WC_P1O2S%d",injector,step );
sprintf(DestineTag,"Inj%d_MR_P1O2S%d",injector,step );
SourceValue= GetTagFloat(SourceTag);
SetTagFloat(DestineTag,SourceValue);

sprintf(SourceTag,"Inj%d_WC_P1OutS%d",injector,step );
sprintf(DestineTag,"Inj%d_MR_P1OutS%d",injector,step );
SourceValue= GetTagFloat(SourceTag);
SetTagFloat(DestineTag,SourceValue);

sprintf(SourceTag,"Inj%d_WC_P1NRGS%d",injector,step );
sprintf(DestineTag,"Inj%d_MR_P1NRGS%d",injector,step );
SourceValue= GetTagFloat(SourceTag);
SetTagFloat(DestineTag,SourceValue);
}
}

with this code I am abling to read 240 words and usually this take 8-10 seconds (TCP/IP - S7 400-414).

For debugging I have put the 4 pushbuttons in one page the result is :

by pressing the 1st pbthe system takes 10 seconds to terminate the routine
by pressing the 2nd pbthe system takes 20 seconds to terminate the routine
by pressing the 3rd pbthe system takes 30 seconds to terminate the routine
by pressing the 4th pbthe system takes 40 seconds to terminate the routine

If between the 2 operations I change page the time remains 10 seconds !!!!!!!!

Any IDEA or suggestion are appreciated.

Sandro

Here is the content of the diagnose directory. But I don't know if is present some info about
the script...