Tag Commands

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A tag command is an action, or a command, on a tag. For example: Apply or remove a force, send a control.

These tag commands are supported:

Tag Command Description
AcknowledgeAlarms Acknowledges all alarms associated with a 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 tag
EnableAlarms Enables all alarms associated with a tag
ForceValue Applies a force to an analog 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 tag restoring the actual value to the tag
ResetStatistics Resets the statistics counters of a tag
Run Requests the execution of a calculation or a program
SendMessageTo Sends a message to the specified 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 tag
WriteValueQuality Writes a new value and quality to a tag

User Rights

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.