Specifications

Table Of Contents
Third-Party and Building Management Interfaces
30
5.6 SiteTPI-E and Third-Party Equipment with Different Modbus Protocol
Customer wants to monitor third-party equipment with SiteScan Web. The third-party equipment
supports Modbus, but each type supports a different Modbus interface. The Modbus protocol on the
UPS supports 2-wire interface; the air equipment supports 4-wire Modbus interface.
5.6.1 Target Application
A typical application might be:
Third-party equipment with different Modbus interfaces
Existing system is SiteScan Web
5 third-party UPSs that support 2-wire Modbus interface
10 third-party air units that support 4-wire Modbus interface
5.6.2 Description
It is important to determine what type of Modbus interface the third-party equipment supports. For
this configuration, one SiteTPI-E will be used for the 2-wire Modbus devices and a separate SiteTPI-E
will be used for the 4-wire Modbus equipment. The order requires five TPICONFIGs, two for the UPS
equipment and three for the third-party environmental equipment.
Note: This order requires HIGRAPHIC-M to add the third-party equipment to the existing SiteScan
Web graphics.
5.6.3 Bill of Materials
Figure 19 Example of SiteTPI-E and third-party equipment with different Modbus protocol
Table 20 Bill of materials: SiteTPI-E and third-party equipment with different Modbus protocol
Qty. Mktg. P/N Description
2 SiteTPI-E TPI to integrate Modbus device into SiteScan Web
5 TPICONFIG Includes custom programming of up to 100 mapped Modbus data points
2 XFMR24 External power supply - 120VAC/24VAC
2 HIGRAPHIC-M Modification to an existing floor plan or graphic
Note: The bill of materials does not include LGS startup part numbers. Most LGS startup part numbers are added automatically
when ordering.
Customer Network
SiteScan Web
Server
2 – Wire Modbus
4 – Wire Modbus