Mitsubishi RS232/485/LAN Serial Communication Control Manuale Pagina 251

  • Scaricare
  • Aggiungi ai miei manuali
  • Stampa
  • Pagina
    / 349
  • Indice
  • SEGNALIBRI
  • Valutato. / 5. Basato su recensioni clienti
Vedere la pagina 250
12 Modbus
2-251
Chap.2
FC4 Read input registers
Reading of Input Register (IR) consecutively
(Request)
Byte 7 FC (Function code)=04
Byte 8-9 Reference No.
Byte 10-11 Number of read words (1 to 125 words)
(Normal response)
Byte 7 FC (Function code)=04
Byte 8 Number of bytes for the response (number of read words x 2)
From Byte 9 Read data
(Abnormal response)
Byte 7 FC (Function code)=84 (HEX)
Byte 8 Exception code 01 or 02
(Example)
Reading of IR300001 (1 word). The read value is 1234 (HEX).
04 00 00 00 01 => 04 02 12 34
Vedere la pagina 250
1 2 ... 246 247 248 249 250 251 252 253 254 255 256 ... 348 349

Commenti su questo manuale

Nessun commento