Sepam - HV/MV Protection and control units (ENG) - Trinet

eading of block n° 79h of the recordtransmitted01 03 D300 00 7D (+crc)(reading of 125 words at address D300 of slave n° 1)received01 03 FA 7937 .........(+crc)7937 = (exchange n° 79h, number of usable bytes = 55)Only the first 55 bytes (37h) are part of the recordacknowledgment of block n° 79h of the recordtransmitted01 10 D300 00 01 02 7900 ........(+crc)7900 = (exchange n° 79h, number of usable bytes = 0)(writing of 1 word at address D300 of slave n° 1)received01 10 D300 00 01 (+crc)Reading of block 7Ah is not necessarily compulsoryIt may served as the end of the program loop due to the fact that the number ofusable bytes is equal to 00.reading of block n° 7Ah of the recordtransmitted01 03 D300 00 7D (+crc)(reading of 125 words at address D300 of slave n° 1)received01 03 FA 7A00 .........(+crc)7A00 = (exchange n° 7Ah, number of usable bytes = 0)The 248 bytes have no significant valuesRereading of the identification zoneto check that the requested record is still presentreading of the identification zonetransmitted01 03 D204 00 0025 (+crc)(writing of 37 words at address D204 of slave n° 1)received01 03 4A0000 0000 048F 70E0 0002 0061 0B0E 0801 8FF0 00610B0E 0800 80E9 0000 0000 0000 0000 0000 0000 00000000 0000 0000 0000 0000 0000 0000 0000 0000 00000000 0000 0000 0000 0000 0000 0000 (+crc)Jbus/Modbus communication37