Yaskawa VS-616G5 Modbus Plus Communication Card - Manual (Page 59)

Examples 9-15
Example #6
Write a Global Frequency Reference Multiplier to Drive #2
This example will write a global frequency reference multiplier of 0.500 to drive #2. The global
frequency reference multiplier register is data code F201h in the Satellite Internal Register Group.
The value of the multiplier can range from 0.001 to 9.999. Each drive that receives a global
frequency reference will multiply the value received by the value in their Register 002h.
NOTE
For this operation to be valid, each drive must be initialized to receive global data. This is
done by sending the address of the PLC/host device (source of global data) to F200h.
In this example, an input to the PLC will be used to initiate the MSTRs that will write the reference
multiplier to drive #2. The input will be addressed at 10006.
Since the Receive Global Data Register and the Global Reference Multiplier Register can only be
written to one word at a time, only two MSTR transactions will be needed. The following MSTR
transactions should be performed:
#
MSTR Transaction Control
Registers
Data
Registers
1 Write to the Global Write Source Data Register
Multiplier Register on drive #2
40220 40230
2 Write to the Global Reference
Multiplier Register on drive #2 40240 40250
The MSTR functions inserted into the ladder logic would look like:
10006 00042 00040
00041
00040
00042
00042 00045 00043
00044
00043
00045
40240
40250
MSTR
#0010
40220
40230
MSTR
#0010