Yaskawa VS-616G5 Modbus Plus Communication Card - Manual (Page 58)

9-14 Examples
MSTR Transaction #2
The Control Block and Data Block registers for the second MSTR must be loaded with the
following data before the MSTR block is executed. This MSTR will ENTER data into Non-Volatile
memory on the drive at node #2.
CONTROL BLOCK
Register
Number
Register
Description
Register
Data
Data
Description
40200 Operation Code 0001h 0001h = Write to Multiple Registers
40201 Network Error Code 0000h The error code returned by Modbus Plus
communications
40202 Number of Registers 0001h Write to 1 register
40203 Data Register Code FFFDh Data code for the “ENTER” command
40204 Routing 1 0002h Modbus Plus node address of the drive = 0002h
40205 Routing 2 0001h End of routing path = 0001h (Modbus Plus
requirement)
40206 Routing 3 0000h This routing register is not used, must be set to 0
40207 Routing 4 0000h This routing register is not used, must be set to 0
40208 Routing 5 0000h This routing register is not used, must be set to 0
DATA BLOCK
Register
Number
Register
Description
Register
Data
Data
Description
40210 ENTER data into
Non-Volatile memory 0000h To ENTER data into Non-Volatile memory, set
this register to ‘0’
CAUTION
USE THE ‘ENTER’ COMMAND ONLY WHEN NECESSARY!
The life of the Non-Volatile EEPROM on the VS-616G5 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 (ERR), requiring the
VS-616G5 control board to be replaced.