Symbol SE 923, Integration Manual

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A-6
SE-923 Scan Engine Integration Guide
END
END
set up host character time out
WHILE (not timed out AND not the last character) DO
IF (a character was received) THEN
reset host character time out
END
END
WHILE (host is requesting to send) DO
wait /* for host to end handshake */
END
remove host’s permission to send
process received message and prepare response
END
RETURN
The Host
This section describes the requirements specific to the host.
Transmitting Data
The host only transmits after receiving permission from the decoder. There is no limit to the
number of characters per transmit. However, the maximum character-to-character delay
cannot exceed the Host Intercharacter Time-out parameter. The HOST RTS signal must
return to inactive at the end of transmission (unless the host wants to temporarily prevent the
decoder from transmitting).