The ModScan application operates as a MODBUS mastermodbus_protocol
device in either RTU or ASCII transmission modes. ModScan may be used
to access and modify data points contained in one or more MODBUS slave
devices connected to the PC via a serial port, modem, or network. ModScan
supports the standard MODBUS message types 01-06, 15 & 16, as well as
providing the ability for you to exercise special features of a slave device by
transmitting custom command strings and observing the response. ModScan
is a useful test and diagnostic tool for verifying the proper slave response to
MODBUS queries as well as being a low cost data collection tool for
interfacing data into PC database and spreadsheet applications.
首先设置通讯端口参数,设置完毕,点击”OK”连接,如下: