[?]: Accessing to MMC from user program (VIPA PLC)

[tunayk]

Hi,

Probably you know, vipa plc's have special functions (SFC208-215) which are used to access MMC.
We may work with created files in MMC like MS-DOS.
I have used these functions for recording process data.
There is no problem to read and write MMC.
But, reading or witing to MMC takes very long time (512bytes writing takes nearly 10seconds).
Opening a file on MMC takes 30sec.
Is it normal or I am walking on wrong way?

Could anyone recommend fastest way to read and write to MMC ?

[pconline]

Hi,

Probably you know, vipa plc's have special functions (SFC208-215) which are used to access MMC.
We may work with created files in MMC like MS-DOS.
I have used these functions for recording process data.
There is no problem to read and write MMC.
But, reading or witing to MMC takes very long time (512bytes writing takes nearly 10seconds).
Opening a file on MMC takes 30sec.
Is it normal or I am walking on wrong way?

Could anyone recommend fastest way to read and write to MMC ?

I know that this time is normal for accessing MMC on VIPA.