AVEVA™ Communication Drivers

Global System Item

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The following system item refers to specific information regarding a global condition of the gateway.

System Item Name	Type/ Access Rights	Description	Values
$SYS$Licensed	Boolean/ Read	Indicates whether a valid license is present for the OI Server. If FALSE, this item causes the OI Server to stop updating existing tags, to refuse activation addition of new tags, and to reject write requests in addition to setting quality for all items to BAD. If TRUE, the OI Server functions as configured. All instances have the same value.	RANGE: 0, 1 0: No valid license exists. 1: Valid license exists.

System Item Name

Type/ Access Rights

Description

Values

$SYS$Licensed

Boolean/ Read

Indicates whether a valid license is present for the OI Server.

If FALSE, this item causes the OI Server to stop updating existing tags, to refuse activation addition of new tags, and to reject write requests in addition to setting quality for all items to BAD.
If TRUE, the OI Server functions as configured.

All instances have the same value.

RANGE: 0, 1

0: No valid license exists.

1: Valid license exists.