Rockwell-automation 8520-9API 9/Series OCI API Developer's Guide Instrukcja Użytkownika Pobierz pdf (Strona 113)

5–2 OCI Data Server CNC Commands

Publication 8520-6.6 - August 1999

For applications where it is critical that the command is executed

successfully before continuing on with processing, make certain your

code monitors the return code for confirmation before continuing.

Return code values are given in a table with each command.

The Basic Display Set checks some return codes and translates them

into error messages. See chapter 3 for details on the Basic Display

Set.

For dual process systems, follow the command name with a .1 or .2

to indicate the process number. No process number by default makes

a request for process 1. Single process systems can also use .1 as a

valid command request. Use the table in appendix B to determine if

a command is available as dual process. For example:

[STOP_QUICK_CHECK.1]

would attempt to stop quick check on process 1.

Important: Dual process does not apply to Release 1 of the 9/PC

CNC.

Most development tools accept DDE commands in a standard

format. You must specify to the server:

• Service or Application name – ABOCISERVER

• Topic Name – CNC1 (or your alias for the CNC)

• Link Type – (commands use manual link type)

After the above connection has been made the command can be

issued. The standard format for the command syntax of a DDE

request is:

[command ( argument, argument, ...)]

Where:

command – is the command string which identifies the operation.

For example “INSERT_AXISCAL_POINT” is an example

command string.

argument – is the data to pass to the CNC with the command. For

example axis_num is an argument which is used to pass the number

of the axis back to the control with the command string. If multiple

arguments are used with the command, they are separated by a

comma.

Selecting the Process

OCI Command Syntax

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Rockwell-automation 8520-9API 9/Series OCI API Developer's Guide Instrukcja Użytkownika Strona 113