PARAMETER ISSUES AND DEFINITIONS 4
4.4 RADIO PARAMETERS
4.4.1 RF Baud Rate
This parameter defines the baud rate used for radio communication. The baud rate
value can be set to 9600 or 19200 according to the device communicating with
DLCC. 19200 is the default value.
4.4.2 Transmission Mode (Client only)
DLCC Client can communicate within the system using two different transmission
modes:
• 1 way mode:
(default)
DLCC transmits data without requiring an acknowledgement
answer from the Remote Host (see par. 4.1 for details).
• 2 way mode: DLCC transmits data requiring an acknowledgement answer
from the Remote Host (see par. 4.1 and par. 4.4.5 for details.
4.4.3 Radio Protocol Timeout (Client only)
This parameter sets the valid time to wait before radio transmission between DLCC
and a destination device is considered failed.
This parameter should be set taking into consideration the radio traffic (number of
devices in the same area).
If the RS232 interface connecting the Remote Host and the destination device is
used with ACK/NACK enabled, this parameter should be at least equal to the RX
Timeout parameter for low traffic environments. It should be increased if there are
many devices in the same area.
4.4.4 Single Store (Client only)
This command is active when DLCC (Client) transmits messages/data to a
destination device.
It guarantees a secure control to prevent the transmission of duplicated data.
If Single Store is enabled and DLCC does not receive any answer of good
transmission from the destination device, it enters a special operating mode that
stops sending new messages. When such operating mode is entered, the card
retries transmission itself for the number of attempts selected in the configuration.
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