Product specifications

Archive

Archiving of data collected in audit trail logs is supported by Information

Management History Services. For configuration instructions see System 800xA,

Information Management, Configuration (3BUF001092*).

System and Device Checks

For configuration and use of system and device checks see the applicable

configuration and operation manuals of the corresponding functional areas of

System 800xA.

Data Access

The client should check the status of 800xA OPC server periodically from the time

of connection to the server until the connection is released, to ensure that the server

is functioning. It is not necessary to frequently check the status because this may

degrade system performance. For more information on checking the status, refer to

Accessing 800xA via OPC on page 416.

Accessing 800xA via OPC

800xA OPC functionality consists of two main functions, OPC Support and OPC

Connect. This chapter deals with OPC Support, which enables OPC Clients to

connect to 800xA in order for the client to read and write OPC data from/to 800xA.

800xA OPC Support is typically used by an OPC Client in order to exchange data

between 800xA and third party software applications to be used for e.g. reports,

information management, HMIs, optimization algorithms and lab data systems.

The 800xA license feature that the customer pays for to get 800xA OPC Support

is called ‘OPC Client Connection’.

To be considered when accessing the 800xA OPC Servers:

Accessing the 800xA OPC Servers will generate load in the system, which may

affect normal operation. Especially adding items and doing reads and writes

might affect other functions in the system. Ensure to follow the performance and

capacity limits described in System 800xA, System Guide Technical Data and

Configuration (3BSE041434*).