17: USER COMMUNICATION INSTRUCTIONS« FC4A MICRO SMART USER ’S MANUAL » 17-5Programming WindLDRWhen using the user communication function to communicate with an external RS232C or RS485 device, set the commu-nication parameters for the MicroSmart to match those of the external device.Note: Since communication parameters in the Function Area Settings relate to the user program, the user program must bedownloaded to the MicroSmart CPU module after changing any of these settings.1. Select Configure from the WindLDR menu bar, then select Function Area Settings.The Function Area Setting dialog box appears.2. Click the Communication tab.3. Select User Protocol in the Port 1 or Port 2 list box. (Click the Configure button when changing previous settings.)The Communication Parameters dialog box appears.When 2550 ms is selected in the Receive Timeout box, the receive timeout function is disabled.4. Select communication parameters to the same values for the device to communicate with.5. Click the OK button.