{
  "$schema": "https://raw.githubusercontent.com/nobrega8/mbmap-library/main/schema/mbmap-2.schema.json",
  "mbmap": 2,
  "vendor": "WEG",
  "model": "CFW300",
  "models": [
    "CFW300"
  ],
  "vendor_website": "weg.net",
  "description": "Compact AC drive CFW300: Modbus RTU control, status and serial settings",
  "revision": 1,
  "revised": "2026-10-18",
  "source": "WEG, \"CFW300 Modbus RTU User's Manual\", 10003806158 / 02 (2018-12); https://www.automationdirect.com/static/manuals/wegdrives/modbus_rtu_manual.pdf",
  "sources": [
    {
      "title": "CFW300 Modbus RTU User's Manual",
      "version": "10003806158 / 02",
      "date": "2018-12",
      "url": "https://www.automationdirect.com/static/manuals/wegdrives/modbus_rtu_manual.pdf",
      "note": "sections 3 (programming) and 5.2 (memory map)"
    }
  ],
  "notes": [
    "WEG CFW300 frequency inverter, Modbus RTU slave. The manual describes only the serial-link parameters and the control and status words; the other drive parameters are in the CFW300 programming manual and are not in this map.",
    "Every parameter is a holding register and the register address is the parameter number (P0308 is register 308). The same registers answer function 04.",
    "To control the drive from the network, set the local and remote command and reference sources (parameters 220 to 228) to serial.",
    "Function 43 reads the vendor, the product code and the firmware version ('VX.XX').",
    "Connection defaults are the factory values: address 1, 19200 baud, 8 data bits, even parity, 1 stop bit.",
    "The manual's examples send the high byte of each 16-bit value first."
  ],
  "protocol": "rtu",
  "unit_id": 1,
  "baudrate": 19200,
  "parity": "E",
  "databits": 8,
  "stopbits": 1,
  "byte_order": "big",
  "word_order": "big",
  "address_base": 0,
  "x_status": "official",
  "registers": [
    {
      "name": "P048 Present alarm",
      "group": "Status",
      "area": "holding",
      "address": 48,
      "type": "uint16",
      "access": "R",
      "description": "Number of the alarm now active"
    },
    {
      "name": "P049 Present fault",
      "group": "Status",
      "area": "holding",
      "address": 49,
      "type": "uint16",
      "access": "R",
      "description": "Number of the fault now active"
    },
    {
      "name": "P100 Acceleration time",
      "group": "Ramps",
      "area": "holding",
      "address": 100,
      "type": "uint16",
      "scale": 0.1,
      "unit": "s",
      "access": "RW",
      "description": "First acceleration ramp; the manual's write example sends 10 for 1.0 s"
    },
    {
      "name": "P101 Deceleration time",
      "group": "Ramps",
      "area": "holding",
      "address": 101,
      "type": "uint16",
      "scale": 0.1,
      "unit": "s",
      "access": "RW",
      "description": "First deceleration ramp; the manual's write example sends 20 for 2.0 s"
    },
    {
      "name": "P308 Serial address",
      "group": "Serial",
      "area": "holding",
      "address": 308,
      "type": "uint16",
      "access": "RW",
      "write_min": 1,
      "write_max": 247
    },
    {
      "name": "P310 Serial baud rate",
      "group": "Serial",
      "area": "holding",
      "address": 310,
      "type": "uint16",
      "access": "RW",
      "enum": {
        "0": "9600",
        "1": "19200",
        "2": "38400"
      },
      "write_min": 0,
      "write_max": 2
    },
    {
      "name": "P311 Serial byte configuration",
      "group": "Serial",
      "area": "holding",
      "address": 311,
      "type": "uint16",
      "access": "RW",
      "enum": {
        "0": "8N1",
        "1": "8E1",
        "2": "8O1",
        "3": "8N2",
        "4": "8E2",
        "5": "8O2"
      },
      "write_min": 0,
      "write_max": 5
    },
    {
      "name": "P313 Communication error action",
      "group": "Serial",
      "area": "holding",
      "address": 313,
      "type": "uint16",
      "access": "RW",
      "enum": {
        "0": "Inactive",
        "1": "Disable via Run/Stop",
        "2": "Disable via General Enable",
        "3": "Change to Local",
        "4": "Change to Local keeping commands and reference",
        "5": "Causes a fault"
      },
      "write_min": 0,
      "write_max": 5
    },
    {
      "name": "P314 Serial watchdog",
      "group": "Serial",
      "area": "holding",
      "address": 314,
      "type": "uint16",
      "scale": 0.1,
      "unit": "s",
      "access": "RW",
      "write_min": 0,
      "write_max": 999,
      "description": "0 = disabled"
    },
    {
      "name": "P316 Serial interface status",
      "group": "Serial",
      "area": "holding",
      "address": 316,
      "type": "uint16",
      "access": "R",
      "enum": {
        "0": "Inactive",
        "1": "Active",
        "2": "Watchdog error"
      }
    },
    {
      "name": "P680 Status word",
      "group": "Status",
      "area": "holding",
      "address": 680,
      "type": "uint16",
      "access": "R",
      "description": "Bit map of the drive status"
    },
    {
      "name": "P680 - Second ramp",
      "group": "Status",
      "area": "holding",
      "address": 680,
      "type": "bool",
      "bit": 5,
      "access": "R"
    },
    {
      "name": "P680 - In configuration mode",
      "group": "Status",
      "area": "holding",
      "address": 680,
      "type": "bool",
      "bit": 6,
      "access": "R"
    },
    {
      "name": "P680 - Alarm condition",
      "group": "Status",
      "area": "holding",
      "address": 680,
      "type": "bool",
      "bit": 7,
      "access": "R"
    },
    {
      "name": "P680 - Motor running",
      "group": "Status",
      "area": "holding",
      "address": 680,
      "type": "bool",
      "bit": 8,
      "access": "R"
    },
    {
      "name": "P680 - General enable active",
      "group": "Status",
      "area": "holding",
      "address": 680,
      "type": "bool",
      "bit": 9,
      "access": "R"
    },
    {
      "name": "P680 - Forward direction",
      "group": "Status",
      "area": "holding",
      "address": 680,
      "type": "bool",
      "bit": 10,
      "access": "R"
    },
    {
      "name": "P680 - JOG active",
      "group": "Status",
      "area": "holding",
      "address": 680,
      "type": "bool",
      "bit": 11,
      "access": "R"
    },
    {
      "name": "P680 - Remote mode",
      "group": "Status",
      "area": "holding",
      "address": 680,
      "type": "bool",
      "bit": 12,
      "access": "R"
    },
    {
      "name": "P680 - Undervoltage",
      "group": "Status",
      "area": "holding",
      "address": 680,
      "type": "bool",
      "bit": 13,
      "access": "R"
    },
    {
      "name": "P680 - Fault condition",
      "group": "Status",
      "area": "holding",
      "address": 680,
      "type": "bool",
      "bit": 15,
      "access": "R"
    },
    {
      "name": "P681 Motor speed",
      "group": "Status",
      "area": "holding",
      "address": 681,
      "type": "int16",
      "scale": 0.01220703125,
      "unit": "% of rated frequency",
      "access": "R",
      "description": "13-bit scale: 8192 is the motor rated frequency (P0403), negative is reverse"
    },
    {
      "name": "P682 Serial control word",
      "group": "Control",
      "area": "holding",
      "address": 682,
      "type": "uint16",
      "access": "RW",
      "description": "Commands from the serial line. Only works when the command sources in the 220 to 228 parameters are set to serial"
    },
    {
      "name": "P682 - Run",
      "group": "Control",
      "area": "holding",
      "address": 682,
      "type": "bool",
      "bit": 0,
      "access": "RW"
    },
    {
      "name": "P682 - General enable",
      "group": "Control",
      "area": "holding",
      "address": 682,
      "type": "bool",
      "bit": 1,
      "access": "RW"
    },
    {
      "name": "P682 - Forward direction",
      "group": "Control",
      "area": "holding",
      "address": 682,
      "type": "bool",
      "bit": 2,
      "access": "RW"
    },
    {
      "name": "P682 - JOG",
      "group": "Control",
      "area": "holding",
      "address": 682,
      "type": "bool",
      "bit": 3,
      "access": "RW"
    },
    {
      "name": "P682 - Remote mode",
      "group": "Control",
      "area": "holding",
      "address": 682,
      "type": "bool",
      "bit": 4,
      "access": "RW"
    },
    {
      "name": "P682 - Second ramp",
      "group": "Control",
      "area": "holding",
      "address": 682,
      "type": "bool",
      "bit": 5,
      "access": "RW"
    },
    {
      "name": "P682 - Fault reset",
      "group": "Control",
      "area": "holding",
      "address": 682,
      "type": "bool",
      "bit": 7,
      "access": "RW"
    },
    {
      "name": "P683 Serial speed reference",
      "group": "Control",
      "area": "holding",
      "address": 683,
      "type": "int16",
      "scale": 0.01220703125,
      "unit": "% of rated frequency",
      "access": "RW",
      "write_min": -400.0,
      "write_max": 399.98779296875,
      "description": "13-bit scale: 8192 is the motor rated frequency (P0403). Direction also depends on bit 2 of the control word"
    }
  ]
}