Yaskawa VS-616G5 Modbus Plus Communication Card - Manual (Page 52)

9-8 Examples
Example #4
Write Global RUN/STOP and Frequency Reference
This example will show how to write a global RUN REVERSE command and a 34.56 Hz
frequency reference to all drives on the MB+ network. To enable this global write function, the
address of the active local network PLC/host device (the source of global data) must be written to
data register code F200h for each drive receiving global data.
In this example, an input to the PLC will be used to initiate the MSTRs that will write to the F200h
register. This input will be 10004.
This example requires multiple MSTR transactions. The following MSTR transactions will be
performed:
#
MSTR Transaction Control
Registers
Data
Registers
1 Enable Global Data to the drive at node #2 40100 40110
2 Enable Global Data to the drive at node #3 40120 40130
3 Enable Global Data to the drive at node #4 40140 40150
4 Write Global Data to the drives 40160 40170
The MSTR functions inserted into the ladder logic would look like:
10004 00024 00022
00023
00022
00024
00024 00027 00025
00026
00025
00027
00027 00030 00028
00029
00028
00030
40100
40110
MSTR
#0010
40120
40130
MSTR
#0010
40140
40150
MSTR
#0010