Delta-electronics VFD-M Manual de usuario Pagina 70

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    VFD-M …………..………………………….…… . 70
3.4. CHK ( )
ASCII режим:
LRC (  )  ,  256, 
  ADR1    ,   
 2-   .  ,  1  
0401H   01H.
STX ‘:’
ADR1 ‘0’
ADR0 ‘1’
CMD1 ‘0’
CMD0 ‘3’
‘0’
‘4’
‘0’



‘1’
‘0’
‘0’
'0’
 
‘1’
LRC CHK 1 ‘F’
LRC CHK 0 ‘6’
END1 CR
END0 LF
01H+03H+04H+01H+00H+01H=0AH,
2-   0AH 
F6
H.
RTU :
ADR 01H
CMD 03H
  21H
02H
  00
( ) 02H
CRC CHK Low 6FH
CRC CHK High F7H
CRC (   )   :
 1 :  16-bit  ( CRC ) FFFFH;
 2:    8-bit     
   16-bit  CRC,   CRC .
 3:     CRC  MSB  .
  LSB.
 4:  LSB CRC   0,   3,
 
  CRC    A001H.
 5:   3 4,   ,      .
,  8-bit   .
 6:    2  5   8-bit    .
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