Rockwell-automation 8520-9API 9/Series OCI API Developer's Guide Manual de usuario descargar pdf (Pagina 99)

4–51OCI Data Server Data Items

Publication 8520-6.6 - August 1999

SP (variable number)

Data Type LREAL

Read/Write Read/Write

Array Index paramacro variable number

Control Type Lathe/Mill/Grinder

Grinder Control Type is not available for Release 1 of 9/PC.

Use paramacro data items to read or write paramacro variable values.

You can access all paramacro variables including, local, common,

system, PAL/Logic and dual process variables. The majority of these

support both read and write functions with the exception of some

select system paramacro variables. Details on read/write capability

of system paramacro variables are given in your operation and

programming manual. Format for this data item is SP followed by

the variable number:

SP101 (reads the value of paramacro variable #101)

SP102,5 (reads the value of paramacro variables #102 thru 106)

There can be timing issues related to paramacro variables that are

altered through part program execution, for example if your OCI

station changes a variable that is later changed during part program

execution (or PAL/Logic assignment in some cases) foreground scan.

When reading/writing local data items the local item is only valid for

the main/subprogram or paramacro program currently executing.

Refer to the paramacro chapter of your operation and programming

manual for details on local values.

AVAILABLE_MEMORY

Data Type UDINT

Read/Write Read only

Array Index none

Control Type Lathe/Mill/Grinder

Grinder Control Type is not available for Release 1 of 9/PC.

Use the AVAILABLE_MEMORY data item to determine the

remaining part program space on the CNC’s Main and Protected part

program directories. This data is returned as the number of bytes

available. Bytes can be converted to meters (as indicated on the

basic display set) as 393.846 bytes = 1 meter of tape.

Paramacro Variable Data

Items

Part Program Directory

Data Items

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Rockwell-automation 8520-9API 9/Series OCI API Developer's Guide Manual de usuario Pagina 99