RST Instruments’ MEMS Digital In-Place Inclinometer (IPI) System is designed to reliably measure lateral movement in and around dams, embankments, landfills, landslides, piles, piers, retaining walls, and abutments, particularly when continuous remote monitoring is required. It provides an early warning for movement, essential for protecting life and equipment.

Each IPI sensor is identified by a factory-programmed unique serial number. When using the Modbus communication mode, each IPI sensor will be referenced by a unique Modbus address. Modbus addresses need to be programmed by the user each time a new IPI system is assembled and installed in the field, or when sensors are added to or replaced in an existing system.

The RST IPI Utility was created to facilitate programming the Modbus addresses in the field. It uses a familiar Microsoft Windows graphical interface. This manual outlines the procedure required to assign Modbus addresses to an IPI system.

The Modbus address is stored in the non-volatile memory of each IPI unit. As such, the procedures outlined in this manual will only need to be performed once per string, unless new units are added to a previously configured string.

It is important to note that the instructions included in this manual are specific for RST’s IPI27050 series IPIs with serial numbers greater than 80000. However, some earlier generations of RST’s IPIs may also be configured to use Modbus communication. Please contact RST for further information.

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