Ack/Nack From Remote Host (Client Only) - Datalogic DL Cordless Card Reference Manual

4
transmission is not successful after the number of configured attempts, the message
is lost.
To be absolutely sure that messages are received by the destination device, set
Single Store to continuous. A new message will not be sent unless the previous one
is received. If using Single Store as continuous, and the transaction is not received,
check that the Server is active and that the DLCC configuration is correct.
If your application requires an acknowledgement from the Remote PC, you must
define Single Store and enable ACK/NACK From Remote Host (see par. 4.4.5).
4.4.5

ACK/NACK From Remote Host (Client only)

This parameter sets a transmission protocol which takes place between the DLCC
(Client) Host and the destination device Host (Remote Host). The transmission is
influenced by the transmission mode selected (see par. 4.4.2).
Before selecting this parameter ensure that "ACK/NACK Protocol"
is disabled (see par. 4.2.2).
CAUTION
One way mode:
Host sends a message to DLCC which passes it to the destination device via radio.
In case of good transmission, the destination device transmits a radio
acknowledgement back to the card. If received before the Radio Protocol Timeout
expires, DLCC sends an ACK character to the Host. If the timeout expires before
receiving any acknowledgement, the card transmits a NACK character.
Host
Two way mode:
Host sends a message to DLCC which passes it to the destination device via radio.
The destination device transmits the message to the Remote Host which responds
30
Message
acknowledgement
1 Way Transmission Mode
radio
DL CORDLESS CARD™
Remote Host