22 User’s / Programming Guide
Transmission Mode
Full Duplex or Half Duplex
Transmission mode selects either full or half duplex operation regard-
less of interface. In the half duplex mode, the decoded message is sent
simultaneously to the display and to the host computer. In the full
duplex mode, the message is sent to the host computer. In send mode,
the host always has the capability to send a message directly to the
LCD.
The advantage of the full duplex mode is that the display shows the
message received by the host. In the half duplex mode you can see
that the message has been sent but there is no confirmation that it was
received. The disadvantage of the full duplex mode is simply that the
host computer must be programmed to relay the message back to the
scanner.
NA Transmission Mode = Full Duplex
NB Transmission Mode = Half Duplex *#
System Status
To examine the configuration of your system, scan the appropriate
option.
When Option ZB is scanned, a list of currently programmed parame-
ters is sent to the display device. Scanning ZB may interfere with your
terminal software, depending on your application.
NOTE
This section pertains only to models with a Liquid Crys-
tal Display (LCD)
NOTE
For models which do not have an LCD, parameter selec-
tions NA and NB have no effect.