Standard Items

Protocol Items

See Common Modbus OPC Items. In addition to the common items, the Alien 2 protocol also has the following Extended items:

Item	Data Type	Description
ClearDeviceSampleLog1InDevice	I2	Clear device sample 1 log entries in device.
ClearDeviceSampleLog2InDevice	I2	Clear device sample 2 log entries in device.
ClearErrorLogInDevice	I2	Clear error log in the device.
DateTime	Date	Date and time in device.
GCWrite/Txn		Used for automated gas quality download.
LastDailyRecord	Date	Timestamp of the last daily record retrieved from meter.
ResetDaily	BOOL	Erase the daily history retrieval pointer for meter (and re-collect all daily history during the next retrieval).
ResetDeviceSampleLog1InACM	BOOL	Reset device sample log 1 pointer in ACM.
ResetDeviceSampleLog2InACM	BOOL	Reset device sample log 2 pointer in ACM.
ResetPlungerCycleLog	BOOL	Reset the plunger cycle log.
RetrieveHistory	I2	Retrieve enabled history.
TimeSync	I2	Perform time synchronization.