Lufkin 2.0 – Cyclic Steam Injection Pressure Monitoring

Over view: A new feature has been added to the LWM RPC platforms to support pressure monitoring. The new feature is named Cyclic Steam Injection Pressure Monitoring, or CSIPM.

CSIPM Recording Functionality

24-Hour History – The CSIPM functionality records timestamped pressure readings from a selected AnalogInput to a 24-hour buffer every minute.

24-Hour History Snapshot – At the end of the 24-hour period, a snapshot of the previous 24-hour period is taken and stored in a static buffer, where they will stay for the next 24 hours. This snapshot will give the SCADA system a 24-hour window to retrieve the previous 1-minute buffer from multiple devices.

60 – Day Daily Peak Pressure Buffer – Also, at the end of a 24 hour period the peak value in the 24-hour buffer is recorded to the 60-day peak pressure buffer.

The start and end time of the 24-hour period is user configurable. The user can choose to use the already programmed Gauge Off Time, GOT, or use another user programmable time.

Configure in XSPOC:

For the setup of this feature in XSPOC, the customer will need to make sure that 41937 and 41940 are both setup as setpoints, in tblParameters, for POCType=8, so the DoSetPointScan will insert/update the values to the tblCurrRawScanData table.

XSPOC will create entries in tblCurrRawScanData when the devices are scanned.
41937 Enable CSIPM (0 = Disable, 1 = Enable)
41940 Analog input Section (Set this value to the Analog input # to monitor 1-32 Analog Channel (-when inserting into tblDataHistory, the address can be determined by using the associated analog input number in register 41940. So if it is a 1 30033 is used, as that is AI1, if it is a two, 30043 is used, and so on. The Formula is: 30023 + (10 * Value in 41940). The value in 41940 will be pulled from tblCurrRawScanData.)

The task CaptureRegisterLogs needs to be enabled in tblSchedule (by Port).