Receiving modbus exception 2 after read/write-ing from start address 2050 and higher

[rafogoya]

Hi,

When I read from holding registers with start address 2050 and higher with registers length 1, I receive an error: "Modbus exception 2: Illegal data address (register not supported by device)". But when I read from start address 2048 with registers length 50, I am not receiving any error. However, I read from start address 2300 with registers length 2 by the Easy Modbus Client successfully. Same issue when I write in holding registers from start address 2050 and higher. What's the problem, and how can I read/write with a start address of 2050 and higher?

clientModbus.readHoldingRegisters(2049, 100, (err, data) => {
    if(err) {
        console.log(err);
    } else{
        console.log(data);
    }
})

Received error

Error: Modbus exception 2: Illegal data address (register not supported by device)
    at ModbusRTU._onReceive (/project/node_modules/modbus-serial/index.js:371:21)
    at TcpPort.emit (node:events:527:28)
    at Socket.<anonymous> (/project/node_modules/modbus-serial/ports/tcpport.js:92:20)
    at Socket.emit (node:events:527:28)
    at addChunk (node:internal/streams/readable:315:12)
    at readableAddChunk (node:internal/streams/readable:289:9)
    at Socket.Readable.push (node:internal/streams/readable:228:10)
    at TCP.onStreamRead (node:internal/stream_base_commons:190:23) {
  modbusCode: 2
}

Thank you.