Yaskawa VS-616G5 Modbus Plus Communication Card - Manual (Page 73)

Examples 9-29
Example #9
Read the Drive Status Registers from Drive #2, #3, and #4
This example will read the various drive status registers (such as Drive Status Signals, Drive Fault
Contents, Communication Data Link Status, Frequency Reference, Output Reference, Output
Current, and DC Bus Voltage) from all of the VS-616G5s. In this example, an input to the PLC will
be used to initiate the MSTRs that will read the drive status. This input will be addressed at
10009.
Since all of these drive status registers are consecutive, this example only requires one read
MSTR transactions per drive. The following MSTR transactions will be performed:
# MSTR Transaction Control
Registers
Data
Registers
1 Read drive status (F000h - F00Fh) from drive #2 40680 40690
2 Read drive status (F000h - F00Fh) from drive #3 40710 40720
3 Read drive status (F000h - F00Fh) from drive #4 40740 40750
The MSTR functions inserted into the ladder logic would look like:
10009 00076 00074
00075
00074
00076
10009 00079 00077
00078
00077
00079
10009 00082 00080
00081
00080
00082
40680
40690
MSTR
#0020
40710
40720
MSTR
#0020
40740
40750
MSTR
#0020