7
Gateway SetUP
3.1 Record Identification Data
each gateway has a unique part number located on the side or
the back of the unit. this number should be recorded, as it may be
required for technical support. the numbers are as follows:
Model
Part Number
Modbus/BaCnet Gateway
GXXX001932
Figure 1: Gateway Part Numbers
●
GXXX001932 units have the following 3 ports: RS-485 + ethernet
+ RS-485
3.2 Point Count Capacity and Registers per
Device
the total number of registers presented the device(s) attached to
the gateway cannot exceed:
Part number
Total Registers
GXXX001932
5,000
Figure 2: Supported Point Count Capacity
Devices
Registers Per Device
NFB-C Single Boiler
118
NFB-C Main 1 Sub 1 - Sub 31
113 - 1013
Figure 3: Registers per Device
3. GaTeway SeTUP
3.3 Configuring Modbus Device
Communications
3.3.1 Input COM Settings on any Device Connected
to the Gateway
●
Any connected serial device MUST have the same baud rate,
data bits, stop bits, and parity settings as the gateway.
●
Figure 4 specifies the device serial port settings required to
communicate with the gateway.
Port Setting
Device
Protocol
Modbus RtU
Baud Rate
9600
Parity
None
Data Bits
8
Stop Bits
1
Figure 4: COM Settings
3.3.2 Set Node-ID for any Device attached to the
Gateway
●
Set Node-ID for the device attached to gateway. the Node-ID
needs to be uniquely assigned between 1 and 255.
●
Document the Node-ID that is assigned. the Node-ID assigned is
used for deriving the Device Instance for BaCnet/IP and BaCnet
MS/tP (
Note
the Modbus tCP/IP field protocol Node-IDs are
automatically set to be the same value as the Node-ID
of the device.
3.4 attaching the antenna
wi-Fi antenna:
Screw in the wi-Fi antenna to the front of the unit as shown in
Note
Using an external antenna is also an option. an external
antenna can be plugged into the SMa connector.
the best antenna for the job depends on the range,
topography and obstacles between the two radios.
Summary of Contents for Modbus/BACnet Gateway
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