Rockwell-automation Logix5000 Controllers Controller Information and S Instrukcja Użytkownika Pobierz pdf (Strona 21)

Determine controller memory information Chapter 2

Choose the memory information

The MSG instruction returns the following information to INT_array

(destination tag of the MSG).

Important:

The controller returns the values in 32-bit words. To see a value in bytes, multiply it by 4. If your controller

does not divide its memory, the values show up as I/O memory. For the 1756-L55M16 controller, the MSG

instruction returns two values for each logic memory category. To determine the free or total logic memory

of a 1756-L55M16 controller, add both values for the category.

If you want the

Then copy these array

elements

Description

Amount of free I/O memory (32-bit

words)

INT_array[3] Lower 16 bits of the 32 bit value

INT_array[4] Upper 16 bits of the 32 bit value

Amount of free data and logic memory

(32-bit words)

INT_array[5] Lower 16 bits of the 32 bit value

INT_array[6] Upper 16 bits of the 32 bit value

1756-L55M16 controllers only—

amount of additional free logic memory

(32-bit words)

INT_array[7] Lower 16 bits of the 32 bit value

INT_array[8] Upper 16 bits of the 32 bit value

Total size of I/O memory (32-bit words) INT_array[11] Lower 16 bits of the 32 bit value

INT_array[12] Upper 16 bits of the 32 bit value

Total size of data and logic memory (32-

bit words)

INT_array[13] Lower 16 bits of the 32 bit value

INT_array[14] Upper 16 bits of the 32 bit value

1756-L55M16 controllers only—

additional logic memory (32-bit words)

INT_array[15] Lower 16 bits of the 32 bit value

INT_array[16] Upper 16 bits of the 32 bit value

1756-L55M16 controllers only—largest

contiguous block of additional free logic

memory (32-bit words)

INT_array[19] Lower 16 bits of the 32 bit value

INT_array[20] Upper 16 bits of the 32 bit value

Largest contiguous block of free I/O

memory (32-bit words)

INT_array[23] Lower 16 bits of the 32 bit value

INT_array[24] Upper 16 bits of the 32 bit value

Largest contiguous block of free data

and logic memory (32-bit words)

INT_array[27] Lower 16 bits of the 32 bit value

INT_array[28] Upper 16 bits of the 32 bit value

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