modbus-scanner 1.0.2

Scanner For Modbus RTU and TCP/IP

Modbus Scanner

For RTU mode, you need to specify the serial port and baud rate.

modbus_scanner -r 0 -f 3 -i 1 -e 10 -c rtu -h COM9 -b 9600 -s 1 -d 8 -p N -t 10

OR

For TCP mode, you need to specify a host and port.

modbus_scanner -r 0 -f 3 -i 1 -e 10 -c tcp -h 192.168.1.10 -l 502

• --register or -r : Register number to start scanning from. Default is 0.
• --fc or -f : Function code to use. Default is 3.
• --start or -i : Starting address to scan from. Default is 1.
• --end or -e : Ending address to scan to. Default is 254.
• --conn_type or -c : Connection type to use. Default is rtu.
• --device or -h : Device to connect to. (Required).

Note: For RTU mode, this is the serial port. For TCP mode, this is the IP address.

• --port or -l : Port to connect to. Default is 502.
• --baud or -b : Baud rate to use. Default is 9600.
• --stop or -s : Stop bits to use. Default is 1.
• --data or -d : Data bits to use. Default is 8.
• --parity or -p : Parity to use. Default is N.
• --timeout or -t : Timeout to use. Default is 60.