YASKAWA V7 Technical Manual page 70

5.14 MODBUS CONTROL
n152 : Modbus Frequency Resolution
The frequency resolution from the PLC and in the frequency reference and output
frequency monitor (by communication) are selected with this parameter. The output
frequency resolution of the Drive is 0.1 Hz. Even if the Modbus resolution is
changed to 0.01 Hz in n152 , the value in the hundredths digit of 0.01 Hz of the
received frequency reference is rounded off internally. When 30,000/100% in units
of 0.1% is selected, the value is also rounded off.
Setting
n153 : Modbus Slave Address
Each slave Drive on the same transmission line must be given a unique address.
n154 : Modbus Baud Rate
Selects the baud rate, as indicated by the following table:
Setting
n155 : Modbus Parity Selection
Selects the parity, as indicated by the following table:
Setting
NOTE: To change the values set in n153 thru n155 and enable the new
settings, it is necessary to turn OFF power to the Drive, then turn it ON again.
Continued
Frequency Resolution
0
1
2 30000/100%
3
Baud Rate (BPS)
0
1
2
3
0
1
2
0.1 Hz
0.01 Hz
0.1%
2400
4800
9600
19,200
Parity
Even
Odd
None
5-18
Factory setting: 0
Range: 0 to 3
Factory setting: 0
Range: 0 to 31
Factory setting: 2
Range: 0 to 3
Factory setting: 2
Range: 0 to 2