[工學(xué)]7章分散型測控網(wǎng)絡(luò)技術(shù)for32hours(參考版)
2025-01-22 08:58本頁面
【正文】 s a plement of the result of this addition． (3) Convert the result into character code 02H (STX)+30H+31H+30H+30H+58H+30H+30H+2CH+31H +32H+33H+2CH+38H+37H+30H+03H (ETX)=30BH C F 5 H1HC F 4 H1H3 0 B H ????Example (Normal response ): ? Description of Read instruction 02H 30H 31H 30H 58H 52H 53H 2CH 31H 30H 30H 31H 57H 2CH 32H 03H 39H 41H 0DH 0AH STX 0 1 0 0 X R S , 1 0 0 1 W , 2 ETX 9 A CR 30H LF Data link layer Data link layer Application layer Read data count Leading read data address Read instruction code ? Read response 02H 30H 31H 30H 58H 30H 30H 2CH 31H 32H 33H 2CH 38H 30H 03H 46H 35H 0DH 0AH STX 0 1 0 0 X 0 0 , 1 2 3 , 8 0 ETX F 5 CR 30H LF Data link layer Data link layer Application layer Termination code (00 normal) Read data 37H 7 ? Description of write instruction 02H 30H 31H 30H 58H 57H 53H 2CH 31H 30H 30H 31H 57H 2CH 32H 03H 46H 45H 0DH 0AH STX 0 1 0 0 X W S , 1 0 0 1 W , 2 ETX F E CR 30H LF Data link layer Data link layer Application layer Write data Leading write data address write instruction code 2CH 36H , 6 35H 5 02H 30H 31H 30H 58H 30H 30H 03H 38H 32H 0DH 0AH STX 0 1 0 0 X 0 0 ETX 8 2 CR 30H LF Data link layer Data link layer Application layer Termination code (00 normal) ? Write response ? SETUP Items of SDC40B C25: the munication function is not activated at address 0 C26： 0:
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