Yaskawa DeviceNet Option Card CM059 User Manual
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Drive Modbus I/O Control Output Instance 150 (96 Hex)
This I/O instance allows all drive parameters and monitors to be read/set. This instance is for Yaskawa drives only, and is not
interchangeable with other DeviceNet drives, Assembly Object Class (04 Hex) Attribute (03 Hex). Both input/output use 5
bytes each. Refer to the Appendix A for a list of Modbus Registers.
The ACCEPT/ENTER parameter group contains only two parameters, the ACCEPT and ENTER parameters.
If the value of ‘0’ is written to the ACCEPT parameter (0910 Hex), the drive will save the current values of the all drive
parameters (A1-00 through o3-02) into RAM memory on the drive. Values saved in RAM memory will not be retained in case
of power loss to the drive.
If the value of ‘0’ is written to the ENTER parameter (0900 Hex), the drive will save the current values of all of the drive
parameters (A1-00 through o3-02) into EEPROM memory on the drive. Values saved in EEPROM memory will be retained in
case of power loss to the drive.
Table 18: Drive Modbus I/O Control Instance 150 (96 Hex) (OUTPUT ASSEMBLY)
Byte
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
0
Function Code
1
Register Number (Upper Byte)
2
Register Number (Lower Byte)
3
Register Data (Upper Byte)
4
Register Data (Lower Byte)
Data
Name
Description
Byte 0
Function Code
The Modbus (response message) function code No. is displayed.
03 Hex: Read normal
10 Hex: Write normal
83 Hex: Read fault
90 Hex: Write fault
Byte 1, 2
Register Number (Upper and Lower Byte) The processed Modbus register No. is displayed.
For Read/write faults, Modbus error code is displayed.
Byte 3, 4
Register Data (Upper and Lower Byte)
The read data at Modbus read command is displayed.
CAUTION
Use the ENTER Command only when necessary! The life of the EEPROM on the drive will support a finite
number of operations. This means that the ENTER command can only be used a maximum of 100,000 times to
store data in the EEPROM. After the specified number of operations, the EEPROM may fault (CPF04) requiring
the drive control board to be replaced.