Rockwell-automation Logix5000 Controllers Controller Information and S Manual de usuario descargar pdf (Pagina 56)

Chapter 5 Access status information

To Enter this instruction

Get the value of an attribute GSV

Set the value of an attribute SSV

9. Assign the required operands to the instruction.

For this operand Select

Class name Name of the object.

Instance name Name of the specific object (for example, name of the

required I/O module, task, message).

• Not all objects require this entry.

• To specify the current task, program, or routine, select

THIS.

Attribute name Name of the attribute.

Dest (GSV) Tag that stores the retrieved value.

If the tag is a user-defined data type or an array, select the

first member or element.

Source (SSV) Tag that stores the value to be set.

If the tag is a user-defined data type or an array, select the

first member or element.

The following example gets the current date and time.

Example:

Get a System Value

At the first scan, the following rung of logic gets the DateTime attribute of the WallClockTime object and

stores it in the wall_clock tag, which is based on a user-defined data type.

For more GSV/SSV information, see the Logix5000 Controllers General

Instructions Reference Manual, publication 1756-RM003.

56 Rockwell Automation Publication 1756-PM015F-EN-P – October 2014

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Rockwell-automation Logix5000 Controllers Controller Information and S Manual de usuario Pagina 56