Requirements to connect a Wattsense Box to a BMS

This article is about the requirements to connect a Wattsense Tower/Bridge to a BMS.

Below the information needed to connect the Wattsense Tower/Bridge with an existing BMS :

R = Required - O = Optional - N/A = Not Applicable - (*) = See remarks			Checklist	Remarks
Document
BMS network overview	R			It helps to identify the best location of the Box
Connectivity
GSM/3G/4G Signal quality test	R		Not Filled	As indication, use your mobile phone as reference:  • Write down the network carrier used for the test • Check the number of network bar of your mobile phone  • Check if you can access website smoothly
Only applicable for IP network
Assign IP address and netmask for the Box	R*			(*) Check with the IT manager of the building to gather these informations
Internet access via ethernet	O*			(*) Check with the IT manager of the building to obtain the gateway IP address
Protocol used on the BMS primary network
BACnet
	IP (Ethernet/RJ45)
BACnet port (UDP port)	R			• IP : Default UDP port is 47808 (0xBAC0)
BOX should be on the same network as BBMD	R
Communication configuration (Baud rate)	N/A			(*) MS/TP: Check with your Wattsense customer support contact
Modbus
	IP (Ethernet/RJ45)	RTU (RS485)
Slave address of all equipment	*	R		(*) This is required when Modbus TCP/IP <==> RTU gateway is used (e.g Schneider EGX 150)
IP address and UDP ports of all equipment	R	N/A		Default UDP port is 502
Network communication configuration	N/A	R		Obtain Baud rate/Parity/Data bit/Stop bit of each Modbus network (Contact your technical team responsible for the BMS)
Modbus register list	O	O		• Required information for the collection of data. Please send via the support contact email: • A list in Xls, CSV, or text file format of the specific data points (properties) you wish to recuperate. - Name of the variables - Register address - Data format - Access type - Modbus function used

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