Impulse MAQ20-940 User Manual - Manual (Page 32)

ReDAQ
®
Shape Software for MAQ
®
20 User Manual
32
4.5 Read / Write Modbus Registers
The Read / Write Modbus Registers tab provides a simple interface to directly read and write any Modbus
register in the system. Through this interface, the user can setup, configure, test, and operate the
MAQ
®
20 data acquisition system. The Read function can read up to 24 registers at once and the Write
function can write to 12 registers at once.
For detailed information on the MAQ
®
20 Modbus commands, refer to MAQ
®
20 Hardware User Manuals
specific to each module type.
To Read from the Modbus registers:
Select the system.
Enter the Start Address to read from and the quantity of addresses to read
Click on the Read button.
If the project is running, current data will be displayed each time the Read button is pressed. If
the project is stopped, the last contents of the register will be displayed.
Data displayed is the decimal value of the ASCII character.
To write to the Modbus registers:
Select the system
Enter the Start Address to write to and quantity of addresses to write.
Enter the data to write using the text boxes. In each box, enter the decimal value of the ASCII
character.
Click on the Write button.