Global system items
- Last UpdatedAug 19, 2024
- 1 minute read
The following global system items refer to information regarding the data source(s) Gateway Communication Driver is connected to.
|
System Item Name |
Type/Access Rights |
Description |
Values |
|---|---|---|---|
|
$SYS$Licensed |
Boolean/ Read |
Only MQTT Connection needs a license. All other connection types (DDE, SuiteLink, OPC, OPC-UA, ArchestrA, and InTouch) do not need a license. |
The value is always true. |
|
$SYS$ReadOnly |
Boolean/Read |
Binary status indication of the Read Only state of a Gateway Communication Driver. If TRUE, the Read/Write access of all items are overridden to read only and cannot be written. If an item is written, a line is logged in the OCMC Logger and the write request is rejected. If FALSE, the Communication Driver items are read/write or read only according to their individual configurations. |
Range: 0, 1 1: Read only 0: Not read only |