private void buttonReadCoils_Click(object sender, EventArgs e) { byte[] theCoilResult; try { theCoilResult = myModbusMaster.ReadCoils(clientAddress, (ushort)((coilAddressRead[0] << 8) + coilAddressRead[1]), (ushort)numericUpDownCoilCount.Value); textBoxReadResult.Text = HexEncoding.ToString(theCoilResult, 0, theCoilResult.Length); } catch (Exception ex) { writeErrorMessage(ex.Message); } }