Opc – (ole for process control), Connecting, Adding process variables – Intek RheoVac CMS User Manual

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September 2013


© Intek, Inc. 2013

Revision D

4.3 OPC – (OLE for Process Control)

CMS is equipped with an OPC data server which can publish its process variables across an

Ethernet network. The CMS software is compliant with OPC version 2.0. When using OPC we
recommend the use of a NTP network time server to ensure the CMS time is synchronized with the
client system.

4.3.1 Connecting

The following information can be used to connect and view the process variables using an OPC

Client. Please be sure to properly configure any firewall to allow OPC communication.

OPC Server Name = OPC_Intek-exe

Remote Machine Name = <CMS IP> or <CMS Network Name>

Client DCOM Settings

Authentication Level: None

Impersonation Level: Identify

Security: Default

4.3.2 Adding Process Variables

Once connected to the CMS system there will be a tree view of the available process variables

organized by instrument type. Select or expand the type of instrument you would like to view outputs
from (FM, PT, RV, TC, MA, etc). Then select or expand the specific instrument you would like to
monitor. Each instrument contains at least one process variable denoted by PV#. PV# will then have a
series of sub values either Label, Units, and/or Value depending on the instrument type. These sub
values can be added to a group or viewed individually to get the current outputs of the desired
instrument. Other variable options are available and vary by client. Please consult your OPC client
manual for more specific settings.

A flow meter (FM) outputs two process variables marked as PV1 and PV2. An example to view

the current information for PV1 flow meter 12345-1 is shown in Table 10. A complete list of all OPC
published variables can be found in SECTION 8 - CUSTOM INFORMATION.

Table 10: Process variable example