Chapter 6 Applied Instruction 
6-411 
The PLC sends the data. 
Low 8 bits 
‘:’ 
16#3A  STX 
Low 8 bits 
‘0’  16#30  ADR 1 
AD (1, 0) is the station address 
of the AC motor drive. 
Low 8 bits 
‘1’  16#31  ADR 0 
Low 8 bits 
‘0’  16#30  CMD 1 
CMD (10) is the command 
code. 
‘3’  16#33  CMD 0 
‘2’  16#32 
Initial data address 
‘1’  16#31 
‘0’  16#30 
Low 8 bits 
‘1’  16#31 
Low 8 bits 
‘0’  16#30 
Number of data (counted by the word) 
Low 8 bits 
‘0’  16#30 
Low 8 bits 
‘0’  16#30 
Low 8 bits 
‘6’  16#36 
Low 8 bits 
‘D’  16#44  LRC CHK 0 
LRC CHK (01) is the error 
checking code. 
Low 8 bits 
‘4’  16#34  LRC CHK 1 
CR  16#0D 
END 
LF  16#0A 
LRC CHK (01) above is the error checking code. It can be calculated by means of the 
instruction LRC. (8-bit mode: SM606 is ON.)   
 
LRC check code: 16#01+16#03+16#21+16#01+16#00+16#06=16#2C 
The two’s complement of 16#2C is 16#D4. ‘D’ (16#44) is stored in the low 
8-bit in D113, and ‘4’ (16#34) is stored in the low 8-bit in D114.   
Additional remark: 
1.  The format of the communication data in the ASCII mode: