Owner`s manual

44
PROBLEM: CAN'T SELECT PERIPHERAL PORT FROM HOST
DEVICE
SYMPTOM: LEDs ON THE FRONT PANEL DO NOT CHANGE
WHEN SELECTING DIFFERENT PERIPHERAL PORT.
CAUSE: Incorrect port selection sequence.
SOLUTION: Verify the selection sequence the host
device is sending to select the desired peripheral
port. The port select sequence consists of the port
select code ($SELECT - default), the desired
peripheral port number (02 to 24), and a
terminating character ( Carriage Return - 0A Hex or
Line Feed - 0D Hex).
CAUSE: Cable.
SOLUTION: Verify that the Tx and Rx signals as well
the handshake signals for the host device are
connected to the correct signals on the Model 24H.
See Section 4 .
CAUSE: Serial port configuration.
SOLUTION: In the configuration mode, match baud
rates, word size, stop bits, parity, and handshaking
with the connected device.