Disconnecting and Reconnecting a Configured RS232-Based Sensor or Output Control Device Can Cause Device Settings to be Lost
NetBotz and RS232 sensor connections
Settings associated with RS232-based sensors or output control devices may
not be preserved if the device is disconnected and then reconnected.
you have connected and configured settings for an RS232-based sensor or
device, do not disconnect or relocate this device unless you are prepared
to reconfigure the device.