How can I disconnect from modus.tcp.connect

[khuang-citylift]

My PLC has 4 threads that I can connect to. Once I connect the 4 times, it will crash on the 5th attempt. Is there any documentation on disconnecting from an existing connection?

I've tried connection.close(), connection.off() without any luck.

[MarcusHuns]

I think connection.close() needs to be inside the connection. block. This worked for me:

modbus.tcp.connect(502, req.ip, { debug: "automaton-2454" }, (err, connection) => {

    connection.writeSingleRegister({ address: req.register, value: Buffer.from([ 0x00, 0x01 ]) }, (err, res) => {
        if (err) throw err;

        console.log(res); // response
        connection.close();
    })
});