AH500 Module Manual Receiving an abbreviated record: 『 Start bit 』 + 『 Instrument address (IA) 』 + 『 Function field (FF) 』 + 『 Checksum (CS) 』 + 『 End mark 』 16#10+D0+16#09+(IA+FF)+16#16 Start bit: 16#10 Instrument (IA): Check whether the instrument address received and the instrument address sent previously are the same. Function field (FF): (*, 1) 1 byte is ignored. If users wan to store the function field, they can store it in a data register. Checksum (1 byte): IA+FF 8-52