Mstr transaction #2 – Yaskawa VS-616G5 Modbus Plus Communication Card User Manual
Page 64

9-20 Examples
MSTR Transaction #2
The Control Block registers for the second MSTR must be loaded with the following data before
the MSTR block is executed. This MSTR reads C1-01 through C8-30.
CONTROL BLOCK
Register
Number
Register
Description
Register
Data
Data
Description
40310
Operation Code
0002h
0002h = Read from Multiple Registers
40311
Network Error Code
0000h
The error code returned by Modbus Plus
communications
40312
Number of Registers
0040h
Read from 64 consecutive registers
40313
Data Register Code
0200h
0200h = start of Cx-xx parameters
40314
Routing 1
0003h
Modbus Plus node address of drive = 0003h
40315
Routing 2
0001h
End of routing path = 0001h (Modbus Plus
requirement)
40316
Routing 3
0000h
This routing register is not used, must be set to 0
40317
Routing 4
0000h
This routing register is not used, must be set to 0
40318
Routing 5
0000h
This routing register is not used, must be set to 0
The Data Block registers for the second MSTR will be filled with the following data when the
MSTR is completed.
DATA BLOCK
Register
Number
Register
Description
Register
Data
Data
Description
40320
C1-01
READ
Acceleration Time 1
40321
C1-02
READ
Deceleration Time 1
?
?
?
?
40383
C8-30
READ
Carrier in Tune