A Tag Command is an action, or a command, on a tag.
These tag commands are supported:
Tag Command | Description |
---|---|
AcknowledgeAlarms | Acknowledges all alarms associated with a database tag |
DirectWriteBit | Directly writes a single bit to a data source |
DirectWriteByte | Directly writes one or more BYTEs to a data source |
DirectWriteString | Directly writes a string to a data source |
DirectWriteWord | Directly writes one or more WORDs to a data source |
DisableAlarms | Disables all alarms associated with a database tag |
EnableAlarms | Enables all alarms associated with a database tag |
ForceValue | Applies a force to a Data Point Tag temporarily masking the real value |
Refresh | Asks a tag to immediately read its value(s) from the data source |
RemoveForce | Removes a force from a Data Point Tag restoring the actual value |
ResetStatistics | Resets the statistics counters of a Channel Tag |
Run | Requests the execution of a calculation or a program |
SendMessageTo | Sends a message to a user |
SetClock | Attempts to synchronize the real time clock of a PLC |
Write | Asks a tag to write predefined values to a data target |
WriteValue | Writes a new value to a database tag |
WriteValueQuality | Writes a new value and quality to a database tag |
Tag commands are protected by User Rights. To execute a tag command, the user must be granted the corresponding user right. For example: to execute a control request on a PLC, the user must have the Write user right for the corresponding tag.