Some Modbus registers contain separate bits to stand for different values. Sometimes additional bits need to be added to the device template in Vista.
- TAC Vista
- Xenta Controllers
This kind of application is required for some projects.
- Create a new device template.
- Fill the name, full address and other information of the register.
- In the BitMask column, fill the Start and Stop bit of the register. For example, if only the 2nd to the 5th bits are needed, then fill “1” in the Start bit while “4” in the Stop bit. Then only the bits needed are added into the device template. The bit numbers to read are different than the start and stop BitMask numbers due to the fact that the first bit in a register is bit number 0.