Rockwell Automation 8520-9API 9/Series OCI API Developer's Guide - Manual (Page 10)

Chapter
1
Publication 8520-6.6 - August 1999
Open Control Interface (OCI)
Overview
This chapter contains an overview of the OCI system and how it uses
Windows DDE
t and RSLinxt software to establish
communications between the OCI data server and the 9/Series or
9/PC CNCs.
Once the OCI data server and RSLinx software for 9/Series CNCs
have been configured and launched, your DDE–compliant
application (for example the OCI Basic Display Set) can read and
write data and execute commands on networked CNCs.
Your DDE-compliant applications can access the data from the OCI
data server by establishing a DDE link to the Server through the
application’s link function. The basic display set uses the
RSJunctionBoxt utility for AdvancedDDE communications.
RSJunctionBox is optional for your own application based upon your
applications performance requirements.
The OCI data server uses RSLinx software to access the processor(s)
through Windows TCP/IP Ethernet tools. This access does not apply
for the 9/PC.
OCI Data Server Overview