REFERENCES
139
OM-GRYPHON™
Host
data
cable
NACK
ACK
data
GRYPHON
™
M
data
good RX
beep
ACK/NACK enabled
When ACK/NACK is enabled, the Host sends an ACK character (06 HEX) in the case
of good reception or the NACK character (15 HEX) requesting re-transmission, in the
case of bad reception. Only after the ACK character is received by the
OM-Gryphon™ does the reader respond with the good reception tone.
If the reader does not receive an ACK or NACK, transmission is ended after the RX
Timeout (see par. 5.1.4). See also Radio Protocol Timeout, par. 5.8.1 for M-Series
readers.
Selection of the ACK/NACK protocol temporarily disables FIFO buffering see par.
5.1.3.
5.1.3
FIFO
GRYPHON™ D Series Readers
This parameter determines whether data (barcodes) are buffered on a First In First
Out basis allowing faster data collection in certain cases for example when using slow
baud rates and/or hardware handshaking.
If the FIFO buffering is enabled, codes are collected and sent out on the serial line in
the order of acquisition. About 800 characters can be collected (buffer full), after
which the reader signals an error and discards any further codes until the
transmission is restored.
If the FIFO buffering is disabled, each code must be transmitted before another one
can be read.
GRYPHON™ M Series Readers
If enabled, the OM-Gryphon™ collects all messages sent by Gryphon™ M and sends
them in order of acquisition to the connected Host.
If disabled, Gryphon™ M blocks message transmission until the
OM-Gryphon™ has completed transmission towards the Host.
Summary of Contents for GRYPHON
Page 12: ...GRYPHON 4 2 3 RS232 CONNECTION 2 4 USB ...
Page 13: ...INSTALLATION 5 2 5 IBM USB POS 2 6 WEDGE CONNECTION ...
Page 14: ...GRYPHON 6 2 7 PEN EMULATION CONNECTION ...
Page 67: ...59 ...
Page 76: ...Enter Configuration Exit and Save Configuration Ì Î DATA FORMAT Ì Î 68 ...
Page 86: ...Enter Configuration Exit and Save Configuration Ì Î POWER SAVE Ì Î 78 ...
Page 98: ...90 ...
Page 120: ...Enter Configuration Exit and Save Configuration Ì Î CODE SELECTION Ì Î 112 ...
Page 138: ...Exit and Save Configuration ADVANCED FORMATTING Ì Î 130 end Format 4 definition ÌHM3uÎ ...