Chapter 6 Applied Instructions Example 1. The PLC is connected to the VFD-S series AC motor drive (ASCII modeSM210 is OFF; 8-bit mode: SM606 is ON.). The PLC sends the command, and reads the data in the six devices at the addresses starting from 16#2101 in the VFD-S series AC motor drive. PLC VFD-S The PLC sends “ ： 01 03 2101 0006 D4 CR LF”. The PLC sends the data in the following table. 6_ LRC CHK (01) above is the error checking code. You can use the LRC instruction to calculate it (8-bit mode: SM606 is ON). 6-527 Register Data Description D100 Low 8 bits ‘：’ 16#3A STX D101 Low 8 bits ‘0’ 16#30 ADR 1 AD (1, 0) is the station address of the AC motor drive.
D102 Low 8 bits ‘1’ 16#31 ADR 0 D103 Low 8 bits ‘0’ 16#30 CMD 1 CMD (10) is the command code. D104 Low 8 bits ‘3’ 16#33 CMD 0 D105 Low 8 bits ‘2’ 16#32 Initial data address D106 Low 8 bits ‘1’ 16#31 D107 Low 8 bits ‘0’ 16#30 D108 Low 8 bits ‘1’ 16#31 D109 Low 8 bits ‘0’ 16#30 Number of data (counted by the word) D110 Low 8 bits ‘0’ 16#30 D111 Low 8 bits ‘0’ 16#30 D112 Low 8 bits ‘6’ 16#36 D113 Low 8 bits ‘D’ 16#44 LRC CHK 0 LRC CHK (01) is the error checking code. D114 Low 8 bits ‘4’ 16#34 LRC CHK 1 D115 Low 8 bits CR 16#0D END D116 Low 8 bits LF 16#0A