YASKAWA VS mini V7 User Manual

Also see for VS mini V7: Connection manual

5 Transmission Interface195.2 Basic Format of Data TransferThe basic format for transferring data is as follows.The size of the header for a data link layer is fixed at two bytes.By setting pin 2 on DIP switch S1, either 17 bytes (17-byte mode) or 32 bytes (32-bytemode) can be selected as the data size for the data link layer. If 32-byte mode is selected,only the first 29 bytes are used as application data.* The first 30 bytes are used only when the INV_I/O sub-command is used.Basic format of data transfer (17-byte mode)Basic format of data transfer (32-byte mode)Command dataStation addressControl codeCommand code−DataWDTResponse dataHeader ofdata link layerData link layer dataand application layerStation address+00H+01H+02H+03H+04H+06H+11H+12H+00H+01H+02H+03H+04H+11H+12HControl codeResponse codeAlarmStatusDataEWDTCommand dataStation addressControl codeCommand code−Data−DataNot used.DataNot used.WDTSub-command Sub-commandSub-statusResponse dataHeader of data link layerApplication layerData in data link layerStation address+00H+01H+02H+03H+04H+11H+12H+13H+14H+1FH+21H+00H+01H+02H+03H+04H+11H+12H+13H+14H+1FH+21HControl codeResponse codeAlarmStatusDataEWDT