KEP Multi-Protocol Communication Card Option Start-up Guide
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3.3 Configuring Device Communications
3.3.1 Input COM Settings for all Devices with an Inserted COM CARD
3.3.2 Set Modbus Node-ID for the Device
•
Set Modbus Node-ID for the device the COM CARD is plugged into. The Modbus Node-ID needs to
be uniquely assigned between 1 and 255.
o
The Modbus Node-ID that is assigned for the device needs to be documented
The Modbus Node-ID assigned is used for designating the Device Instance for BAC-
net/IP and BACnet MS/TP (
Section
6
)
•
The Metasys N2 and Modbus TCP/IP field protocol Node-IDs are automatically set to be the
same value as the Node-ID of the Modbus RTU device.
•
Set the serial device that the COM CARD is plugged into to have the same Baud Rate,
Data Bits, Stop Bits, and Parity settings as the COM CARD.
•
Figure 4
specifies the device serial port settings required to communicate with the COM CARD.
Port Setting
Device
Protocol
Modbus RTU
Baud Rate
9600
Parity
None
Data Bits
8
Stop Bits
1
Figure 4: COM Settings
