TCPbufferdPort do not recive data if length exceeds 123 registers

[MarkusBeer]

If I try to get more than 123 registers using readInputRegisters() on a TcpRTUBuffered port the package do not receive valid response. On wireshark i can see this valid modus response. Also a modbus poll tool for this request is working fine.

Here is a short js code to reproduce (you need to change 'x.x.x.x' to a slave which returns a valid result to reading input registers 1 to 126) :

const ModbusRTU = require('modbus-serial')
const testClient = new ModbusRTU();

async function test() {
try {
await testClient.connectTcpRTUBuffered('x.x.x.x', { port: 502 });
testClient.setTimeout(5000)
const result = await testClient.readInputRegisters(1, 125);
console.log( result);
} catch (e) {
console.log(e);
}
}
test();