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4.0 Configuration
4.11.1.2 Modbus > COM (Serial) Modbus
The BulletPlus can also participate in serial based Modbus, to configure and view the serial Modbus
settings, the COM1 port must first be disabled in the
Comport > Settings
menu. Only the settings that are
different from TCP Modbus will be discussed.
COM Mode Status
Disable to select the Serial (COM) mode for the Modbus service. In RTU
mode, communication is in binary format and in ASCII mode,
communication is in ASCII format.
Values (selection)
Disable
Enable COM ASCII Mode
Enable COM RTU Mode
Baud Rate
The serial baud rate is the rate at which the modem is to
communicate with the attached local serial device.
Values (selection (bps))
921600
460800
230400
115200
14400
9600
7200
4800
57600
38400
28800
19200
3600
2400
1200
600
Data Format
This setting determines the format of the data on the serial port.
The default is 8 data bits, No parity, and 1 Stop bit.
Values (selection)
8N1 /
8E1 / 8O1
Image 4-11-2: Apps > Modbus Serial Configuration