22
CARETAKER PLUS INSTALLATION AND OPERATIONS MANUAL
Flow Control Display Mode (Serial Models Only)
By pressing the ADVANCE switch during normal operation, the LED display is
switched to the flow control display mode. The MODE LED illuminates to indicate this
mode is active. You may return to normal display mode by pressing the ADVANCE
switch again. During flow control display mode, the corresponding port LEDs light only
when the Caretaker Plus has instructed the connected device to stop sending data via
the port's currently selected protocol. Thus, an input device should not be transmitting
data to the Caretaker Plus when its LED is lit. The only time Caretaker Plus instructs a
device to stop sending data is when the device's buffer is full. Thus this display may be
used to monitor buffer status. Also, in this mode the BUSY LED reflects the flow control
status of the shared device's input buffer.