| 摘要 |
PROBLEM TO BE SOLVED: To reduce hoist processing, to attain the realtime control of packet transmission, and to increase a packet-generating speed by providing a timer at a communication interface device, and operating the detection of a transmission timing in a communication interface device. SOLUTION: A packet-generating part 12 reads an initial position code from a buffer memory 11, reads the next time data, and holds the time data in a time data register 16. The written time data are set at a timer 14, and the timer 14 is calibrated. Then, the packet-generating part 12 successively reads data word by word from the buffer memory 11, generates a packet in a normalized length, and outputs the generated packet according to the output of a frequency divider 15. When the data read from the buffer memory 11 are position codes, the packet-generating part 12 waits for a judgment signal from a judging part 17 and repeats the reading of the time data, the holding of the time data in the time data register 16, the successive reading of the data, the generation of the packet, and output. |
