Rockwell Automation 8520-9API 9/Series OCI API Developer's Guide - Manual (Page 134)

5–23 OCI Data Server CNC Commands
Publication 8520-6.6 - August 1999
REFORMAT_MEMORY (no arguments)
This command reformats the RAM disk on the CNC. It will delete
all part programs in both the main and protectable CNC directories.
It will not effect programs stored on the OCI stations hard drive.
Refer to your operation and programming manual for details on the
reformat operation.
RELINQUISH_CONTROL (no argument)
Use this command to manage your system when multiple personal
computers are running the OCI data server and file handler. Only
one OCI station can be in control (able to issue commands and write
data) of any one given CNC. This command identifies to the
9/Series or 9/PC CNC that it should no longer accept commands and
file management activities from the OCI data server and file handler
on this PC. Use this command in conjunction with the
REQUEST_CONTROL command.
Important: For Release 1 of the 9/PC CNC, a single PC runs the
OCI data server.
REQUEST_CONTROL (no argument)
This command is used to take control of a specific CNC with your
OCI station. The controlling OCI station (personal computer) has
authority to execute commands and write data items on the CNC.
OCI stations that do not have control can only view OCI data items
from the CNC. This request is only honored if there is currently no
other OCI station currently in control of the requested CNC.
Important: This command only applies to the local PC for Release
1 of the 9/PC CNC.
This command must be performed successfully before any other
command can be executed or any data items are written by this OCI
server.
Important: The request and relinquish control commands are for
the data server only. They do not influence the
controlling the file handler. The controlling file handler
is determined on a first connection basis. Refer to your
OCI Installation Manual for details on configuring the
OCIFHCFG.INI file for the 9/Series system and refer to
your 9/PC Installation Manual for using the
Configuration Manager on the 9/PC system.