Yaskawa VS-616G5 Modbus Plus Communication Card - Manual (Page 62)

9-18 Examples
Example #7
Read Drive Parameter Registers (bx-xx’s, Cx-xx’s, dx-xxs,
and Ex-xx’s) from Drive #3
This example will read drive parameter registers from drive #3. In this example, an input to the
PLC will be used to initiate the MSTRs that will read the drive parameters. This input will be
addressed at 10007.
This example requires multiple MSTR transactions. The following MSTR transactions will be
performed:
#
MSTR Transaction Control
Registers
Data
Registers
1 Read bx-xx parameters (registers 180h - 1A5h) 40260 40270
2 Read Cx-xx parameters (registers 200h - 240h) 40310 40320
3 Read dx-xx parameters (registers 280h - 296h) 40390 40400
4 Read Ex-xx parameters (registers 300h - 316h) 40430 40440
The MSTR functions inserted into the ladder logic would look like:
10007 00048 00046
00047
00046
00048
10007 00052 00050
00051
00050
00052
10007 00055 00053
00054
00053
00055
10007 00058 00056
00057
00056
00058
40260
40270
MSTR
#0040
40310
40320
MSTR
#0070
40390
40400
MSTR
#0030
40430
40440
MSTR
#0020