Product : ISaGRAF V3
Date : 5-March-1996
File : Oemdata.Adding data to OEM description for IO interface.htm
Subject : Adding data to OEM standard description for IO interface
Keywords: OEM data - I/O data - I/O configuration tool
In some applications, it can be required to complete the description
of IO boards and IO channels (variables) with auxiliary data
provided by a separate tool. This document gives guidelines for such
The ISaGRAF target IO system requires the following information,
normally built by the Code Generator:
- Relationship between variable and IO connection
(slot number / channel index)
- Type and direction must be coherent between variable
and corresponding IO board
- Board OEM key code
This is the minimum required information. Such fields are naturally
stored in the target IO data base, and must be described in the
application IO connection file built with the IO connection editor.
This file may also be generated by another tool, such as your
There is no imposed format for auxiliary parameters put in a
separate data base. The only important item is to establish the link
between both data base.
The easiest way to complete IO description is to use the
slot/channel numbers to make the link between the standard ISaGRAF
connection information and the other data base. A configuration
tool can be used to build this link, and group IO variables on the
ISaGRAF boards. This tool can generate both ISaGRAF connection file
and separate data base.
Just remember that:
- The Workbench IO connection file is absolutely needed for
- One ISaGRAF board groups variables with same type and direction.
OEM parameters may also be used as a reference to establish the link
between data bases.
If your configuration tool is run to generate IO variable connection
file, use this information to initiate a new project, so that IO
variables and IO connection are already declared. Nothing has to be
changed in the ISaGRAF Workbench.
At run time, access to the separate data base is made in the OEM
interface. Nothing has to be modified or adapted in the ISaGRAF
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